Special thanks goes to KamiZephyr on DeviantArt for making a great coverage blog on these two characters. Which clearly saved me a lot of time as well as space on this following prediction blog.
Hello everyone I'm Jack Red aka XboxClown89, today I'm going to do essentially an expanded take on my new prediction. I am not going to sugar coat this, a lot of people aren't going to enjoy this. Personally, I'm hoping enough people can prevent this from even happening on their show. Regardless, this is strictly my opinion of the fight.
Yhwach
Yhwach is the son of the Soul King as well as the source of all quincy powers. He started an thousand years war that eventually got the attention of their mortal enemies, the soul reapers. Yhwach later absorbed two gods to become even more of a deity.
Kaguya
Kaguya is an alien came to Earth, precursor to every Chakra technique in history. She is worshipped by people while feared by others. Her bloodline eventually evolved into the Uchiha clan. Kaguya also was the first person to be the host of ten tailed beast.
Powers and Abilities
Regularly I take the time to fill this in. Thankfully someone else really took the time doing that to a much greater degree.
https://www.deviantart.com/kamizephyr/art/Prelude-Kaguya-VS-Yhwach-758193876
Advantages
Yhwach
+Way more powers potentially
+Capable of shaping every plain of existence means he always have battlefield advantage
+More broken regeneration
+Superior eyes to instantly see everything from every possible angle at once
+Already previously sealed an spiritual being capable of destroying the world
+Capable of stealing powers even if they don't have pieces of his soul
+Likely can withstand Kaguya's technique to disrupt chakra path ways
+Due to his unique bloodline, Kaguya can't copy his techniques
+He can teleport in any plain of existence he wants
+If he dies while affected by an illusion will instantly break through it
+He can instantly revive himself by altering the future
+He also can instantly have weapons broken with his future power as well
+Easily can consume Kaguya
+Through his if that power is an ally, it can't harm him in any possible way
+Superior barriers
+Superior strategist in comparison
+Potentially faster
+Through altering the future power, he can set up traps
+Capable of casting Kirchenlied: Sankt Zwinger that can destroy anyone inside
+Can prevent paralysis through using Ransotengai
+His future power can alter blocked attacks into successful blows
+In the soul society guaranteed to have enough energy for quincy techniques
+Superior senses
+Majority of techniques requires less energy in comparison
+Potentially has more counters in comparison
+Through The Fear can make Kaguya more vulnerable
Kaguya
+More elemental powers
+More energy sources
+A lot more energy in comparison
+Capable of absorbing energy
+It's possible for illusions to work on Yhwach
+More powerful
+Possibly older
+More sight theme powers
+Capable of controlling what's inside the dimensions
+Could manipulate Yhwach's spiritual pressure to a degree
+She can create clones
+More likely to create barriers
+Creating seals
Disadvantages
Yhwach
-A longer period of storing his powers
-If Jugram dies while having The Almighty gets rig of that ability from Yhwach
-A weapon made from Still Silver can disrupt his powers
-Prefers using his own powers in comparison to those from his servants
-Possibly younger, although not by much
-It is possible for a difficult battle to get him tired
Kaguya
-A lot less powers
-She can't copy Yhwach's techniques
-Yhwach has a method to possibly seal the ten tailed beast
-The god trees can be destroyed
-The Infinite Tsukuyomi will not work on Yhwach for multiple reasons
-She can't get around his god sight
-She also can't get around his future power either
-Yhwach altering every plain of existence means he always has the battlefield advantage
-Likely get burnt beyond ashes if Yamamoto's zanpakuto gets used
-If she gets caught by his consume ability, it's game over
-Virtually no counter against if that power is an ally, it can't harm him ability
-Yhwach has experience with techniques meant to disrupt his powers
-Even if his powers are disrupted, he can rapidly get them back at a much faster rate
-Likely won't have any weapon capable of disrupting his powers
-Very likely won't know his unique power connection with Jugram either
-Also likely doesn't have proper counters for majority of quincy powers Yhwach has
-Isn't as much of a strategist as Yhwach
-Vulnerable having her powers stolen
-The ten tailed beast will attempt stealing control when Kaguya is notably low on chakra
-More arrogant in comparison
-Illusions can't work if they are directly used on Yhwach after his god sight activated
-Likely get caught by surprise from traps set up from altering the future power
-Likely get torn apart from being inside Kirchenlied: Sankt Zwinger
-Yhwach can use Ransotengai to prevent paralysis
-His future power can alter blocked attacks to successful blows
-In the soul society, Yhwach has limitless access to reishi for quincy techniques
-Not as good overall senses
-Requires her third eye to travel through dimensions
-It's very difficult to seal Yhwach
-Yhwach has plenty of ways to get around Kaguya's barriers
-Has more energy usage techniques
-Lacks as many potential counters in comparison
-Yhwach has counters for methods to exploit memories as well as emotions
-Likely vulnerable to The Fear if Yhwach uses it
The link above also covers their weaknesses as well so I'm going straight into the verdict section.
Verdict
Yhwach
I highly suggest you take breaks reading this. The following verdict is going to be quite long. I'm going to try fully explaining my argument why Yhwach easily wins this fight.
Clearly this was meant for which manga series had the more terrifying final antagonist. But the more I personally looked into it, the more obvious who the victor going to be. I'm not going to lie, Kaguya in her own right is an impressive being. I personally not a fan of either character, in fact I heavily disliked Yhwach a lot more.
I am well aware it states Kaguya is immortal or is she? Other members of her race can be killed. Those with the tailed beasts do have notable regeneration abilities. Especially those possessing either Kurama aka the nine tailed fox or the ten tailed beast. However regeneration requires chakra in order to work. So a difficult prolong battle would work against both characters.
Of course this isn't even close to one of many problems Kaguya will have in this fight. Yhwach previously stated Yamamoto's zanpakuto while it's in bankai state. The nine tailed fox, the ten tailed beast and Yamamoto's zanpakuto are all stated in their respective canons. Capable of destroying the world.
Yhwach can easily use his zanpakuto to instantly burnt Kaguya beyond ashes even without attacking. His flames are equal to that of the sun means even Kaguya's hottest fire theme techniques are useless. This also means her coldest techniques are doomed to fail as well. It is possible that Kaguya potentially knows every chakra theme technique in history.
Sadly in the long run, none of it even matters. Don't worry I'm going to fully break it down. Before you throw flaming arrows as well as pitch forks, you Naruto fans really need to hear me out on this. Yhwach constantly held his own against the strongest Bleach characters by himself. It heavily applies Yhwach possibly beyond Kaguya's level in combat.
Kaguya also uses the god trees as a source of energy. However it is possible to destroy them. Even if she absorbed them with the ten tailed beast into herself. It doesn't change the fact, Yhwach has so many powers she can't actually counter. I'll start with his own powers, yes there's a huge surprise relating to this.
Kaguya does have more eye theme techniques. The only reason Aizen was even able to hypnotize Yhwach in the first place simply because they previously talked before his god sight activated. This allowed Aizen to have his powers worked on him. It also means with his god sight activated, it's virtually impossible to hypnotize him otherwise.
His god sight actually allows him to know everything in every possible angle at once. This means he already knows every possible technique she's going to do. Which allows him to always be several steps ahead in combat like he constantly done to Ichigo. Obviously surprise attacks are completely off the table here.
If that wasn't bad enough, Yhwach also has if that power is his ally, it can't harm him. It also has an special ability to even making those attacks completely incapable of harming him in any possible way. Abilities like this are game changers in combat. He also can steal abilities even from those who doesn't have pieces of his soul.
Yhwach also can consume Kaguya thus ending the fight. He could summon eyeball creatures to over whelm her. These things can also act as a powerful shield for Yhwach. He also is capable of making an massive city size barrier as well. Yhwach through absorbing, his father the Soul King can alter every plain of existence at once.
In this case means Yhwach will always have the battlefield advantage. Considering Death Battle universe is a neutral universe. This is very bad news for Kaguya. Yhwach also has the ability to alter the future I'm not kidding. Yes this does include those he died in. He can instantly revive himself on the spot.
The same power also allows him to break targeted weapons to instantly break among usage. He can even make his attacks that got blocked changed into successful blows I'm not kidding. He also can set up traps as well making this a rather unfair ability to go up against. Yes he can play mind games while using this ability as well as predicting his opponent's moves.
Kaguya can several types of dimensions sure. As previously stated, Yhwach can alter every plain of existence. He also can instantly travel through dimensions through using his Shadow ability. Yhwach also has a power spell capable of tearing anyone inside apart as well. Kaguya will struggle using her paralysis techniques because of Yhwach's Ransotengai.
Kaguya also doesn't have many techniques to disrupt Yhwach's powers. She wouldn't have access to a weapon made out of Still Silver. Very likely she wouldn't even know about his power connection with Jugram. Jugram gets majority of Yhwach's powers while he asleep. Which means during this process if Jugram dies with those powers, they're gone for good.
The problem with that is Jugram also a capable fighter in his own right. Kaguya can do impressive regeneration while Yhwach let's be honest has very broken regeneration in comparison. One time Ichigo slashed him, within a very short period of time he healed instantly afterwards. This even bags the question how to even kill him in the first place?
It took a well shot Still Silver arrow from Uryu to disrupt his powers during the final battle. However due to his powers, the rate they'll return is very fast compared to the rest of the quincies. Believe it or not, we still haven't even talked about the one thing likely missed in most people's arguments related to this particular versus debate.
It is very critical we even discussion literately the fine print itself. Yhwach done several rituals with people where they drank his blood to get powers while shortened their own life spans. When an quincy dies, their piece of his soul returns to him. Not only he becomes more powerful with a longer life span. He also regain abilities from them as well making him even more broken he already is.
Now if you go to the link above it does quickly cover most quincy powers. Just minus both Uryu and his father since Yhwach didn't take their powers. Even if he did take Uryu's powers, he would've gain more control over this fight. Although it doesn't even matter since he already has exactly what he needs to win.
In the soul society, reishi is everywhere meaning he'll always have additional energy for his more traditional quincy powers. Kaguya can manipulate enemy chakra sadly Yhwach defeated Ichibe who can manipulate the true names, the metaphysical representations of among other things including sentient beings.
This allowed Ichibe to grants himself power over those he targets with his power. This includes Name Curse the ability to lose their voice required to use those powers. Basically he had to fight a broken character virtually limiting his potential. Until his god sight kicked in to ultimately win the fight. I highly doubt Kaguya ever faced anyone like Ichibe in comparison.
Sadly her methods to completely destroy Yhwach's body is virtually useless. Yes she can completely do this but as previously stated Yhwach altering the future makes this a waste of time as well as energy. Kaguya can create clones while through using Gremmy's powers so can Yhwach to quickly even the odds.
This very power could potentially do all the other powers combined with much more insane possibilities. Like when Gremmy temporary opened an section of space itself on Kenpachi. Hell he also could use the same power to create an asteroid capable of destroying the seireitei within impact. Keep in mind, this is a very large building filled with thousands of soul reapers.
On foot, it takes roughly 40 days to get from one side to the other. They never fully confirmed the actual size of that building. So there isn't much to go on for comparison purposes. What we do know is whatever Gremmy creates very true to what he believes it to be. Which meant it actually would've destroyed the seireitei.
Yes there was a barrier but the quincies were smart enough to have a few ways to bypass that problem. They secretly kept an eye on soul reapers for years without them even knowing it. Kaguya doesn't have counters for the following abilities I'm going to name from other quincies. I'll even explain why as well to the best of my abilities no pun intended.
The Balance from Jugram allows the user to control fortune and misfortune in his sphere of influence. He can give himself the good fortune while redirecting the misfortune onto his enemies. Yes this does include tanking damage to only give it to his opponents on a notably worse degree. The Deathdealing from Askin can control the Lethal Dose of anything he ingests or touches.
This also allows the user among ingesting blood can poison someone with their own blood. He also can give himself immunity to any type of attack if he can survive it. Thus two abilities right there preventing attacks from potentially killing Yhwach off. The Fear from As Nodt can allow the user to find fear within memories to exploit.
He also can instill fear into others through his Heilig Pfeil. The Glutton from Liltotto can consume opponents including memories and powers. The Heat from Bazz-B is another fire alternate to instantly kill people a few ways. Now that's two methods of fire Yhwach has that's very fatal among contact. The Jail from Quilge can trap people who aren't quincy inside a reishi prison even after death.
It also prevents dimensional travel greatly limiting Kaguya's options. The Love from Pepe can manipulate others into obeying his every command. The Miracle from Gerard allows the user to turn damage including lethal into size and strength. This also greatly limits a lot of Kaguya's options in comparison.
The Overkill from Driscoll allows the user the more he kills, the more powerful he becomes. The Power from Meninas can control how much strength she has. Which does include increasing her muscle mass. The Question from Berenice allows the user to cause opponent to question & doubt themselves.
Of course, this is a weird ability that involves Kaguya to listen for it to work. I don't think this one would go far but it's still worth mentioning. The Roar from Jerome can use Weaponize Sound in powerful roars. The Superstar from Mask de Masculine requires cheering. This allows the user to become more powerful, increasing physical stats as well as regeneration.
The Underbelly from NaNaNa can allow the user to sense the flow of reishi in an opponent's body. Which would technically apply to chakra in this particular case. Further limiting Kaguya's options to even attempt escaping Yhwach. It also allows the user to directly target weak points to rending the enemy immobile.
The Wind from Nianzol has some similarities to some stuff Kaguya has. However one of it's abilities makes it impossible to hit the user normally. The X Axis from Lille allows the user to fire shots capable of pierce everything in the direction it's aimed at. It can pierces the space without affecting durability. He also can fire a massive beam of light with the properties just larger.
The Yourself from both Royd and Lloyd Loyd can mimic someone. Royd is more about their memories and knowledge. His brother Lloyd mimics their powers as well as appearance. Which means Yhwach could suddenly look like and act like Kaguya to throw her off. Neither brother's mimic ability is flawless but it does come surprisingly close.
The Zombie from Giselle can allow the user to turn others into corpses with her blood. She can control the dead including the previously-killed corpses. Mayuri had to alter some of her zombies to create a possible loop hole to kill her off. This is due to the fact none of the living actually capable of killing her.
This ability alone is incredibly unfair in comparison. I felt I wanted as long as I needed to prove an point. Yhwach vs Kaguya is a surprisingly one sided fight. Even if Kaguya had the stats in her favor. It still wouldn't change the fact, Yhwach has plenty of ways to come right back in this fight. Yhwach is simply too op as well as a very broken character.
Some of Kaguya's similar techniques could cancel a handful of Yhwach's out. Even those are that similar are even more op in favor of Yhwach especially in fire's case. To sum it up Yhwach has a lot more broken powers, skilled enough to constantly held up against stronger beings and greatly limit Kaguya's options.
Now even if Yhwach doesn't use Yamamoto's zanpakuto and additional abilities from deceased quincies. The Almighty with additional god powers he absorbed virtually guarantees Yhwach victory regardless of the possibilities. Kaguya doesn't have any solid methods to keep Yhwach's powers away long enough to kill him in time.
After all, Uryu stepping in a few ways is the only reason Ichigo ended up even killing Yhwach off for good. Including all the powers Yhwach has can virtually prevents Kaguya from escaping altogether. You can even say there's no real hiding place Yhwach can't find. If Yhwach took out the god trees before she absorbs them prevents her from getting a notable power boost.
Yhwach could release Yamamoto's zanpakuto in order to trap the ten tailed beast if he really wanted to. Including additional abilities from gods he absorbed does allow him to be the perfect person for the job. Yhwach himself could simply alter the future in the event of getting killed off by Yamamoto's zanpakuto while Kaguya doesn't have many counters for that.
The Zero Division is stated to have their total power far surpasses the power of all the 13 Divisions together. Keep in mind, it is only five former soul reaper captains. Now that's truthfully impressive considering Yhwach defeated their leader, Ichibe in combat. In comparison, Kaguya did struggle against Naruto and Sasuke mostly due to how both of them reminds her of her children.
Otherwise she would've went even harder on them to possibly win rather than the outcome that happened. Yhwach himself in the end did throw away his own people. In that regard, he'll do whatever he needs to do to achieve his goal no matter how crazy it is. Kaguya has no real way to kill Yhwach off for good.
I didn't even mention Yhwach has proven to fight well without an weapon. Which makes him even more dangerous in combat. Kaguya can't even seal him away for a lot of reasons stated here. I highly doubt Death Battle would allow an fight to end with one of them getting seal away. Clearly still alive, no they want to give us a more clear whose going to win after killing the other person scenario.
In the long run, Kaguya can only do so much to delay the inevitable. Sure she mastered most chakra techniques. But Yhwach could still figure them out at a fast pace. Prolong usages of big techniques will eventually led to her own downfall. Not to mention, Kaguya started the arrogance still presented in the Uchiha clan.
Even some key figures in Naruto states that some techniques can't be copied from those of an unique bloodline. This would actually include Yhwach since he is the son of the Soul King. He also the very source of every quincy powers. Therefore Kaguya herself is incapable even copying his techniques. She also has no counter for Yhwach directly stealing her powers or consuming her a few ways.
Kaguya is stronger as well as more skilled in Madara Uchiha. Sadly, Yhwach virtually has an answer for everything Kaguya can do in every possible situation. Kaguya could travel through creating rips in space-time as well as dimensions she has control over. Yhwach having the ability to alter every plain of existence alone makes this an small issue for him.
To be fair, Kaguya does have her methods to see memories as well as emotions on those she used them on. Yhwach simply has more methods of doing the same as well as more direct counters for those powers. Which meant Kaguya actually wouldn't get far from doing that. Thus even further limiting her options, let's be honest she's doomed to fail here no matter what she does folks.
Winner: Yhwach (Bleach)