Aizen Sosuke has one of the scariest zanpakutos in Bleach“A perfect match for his stingy, manipulative and fraudulent character.” However, as Gin mentions, it is not Kyoka Suigetsu’s ability that is to be feared, but the fact that its wielder possesses so much raw reiatsu that it becomes impossible to defeat him.
However, suppose one looks beyond the perspective of the first protagonist of the shonen story. In that case, it can be seen that there are some Zanpakuto, in their shikai forms, who are capable of defeating Aizen. Similarly, some would have almost zero effect on this dominated villain.
10 Could defeat Aizen: Shinken Hakkyoken – can absorb and divine beings, so it should work against Aizen
The ceremonial sword kept by House Ise, the Shinken Hakkyoken, is pretty useless from a generic combat perspective because it doesn’t even have a sharp edge.
However, it can absorb the spiritual pressure exerted by so-called “divine beings” and disperse or reflect it. It worked spectacularly against Lille Barro’s final form, so it stands to reason that it would have the same result against Aizen after he undergoes his latest Hogyoku transformation.
9 No Chance: Gegetsuburi – He’s extremely weak, so Aizen wouldn’t break a sweat fighting him
Marechiyo Omaeda’s Gegetsuburi is nothing more than a huge hunk of metal, shaped like a sphere with many pikes protruding from the surface.
It works in a similar way to a morning star, allowing its user to perform close and distant attacks without moving from the location. Considering that Ichigo managed to destroy it with a single hit, without even entering bankai, it suggests that Aizen would regard Gegetsuburi as a joke.
8 Could defeat Aizen: Nozarashi – Has the power to cut anything it comes in contact with
Kenpachi finally manages to communicate with his zanpakuto, Nozarashi, and he’s just as beast as him. Excluding its unnecessarily exaggerated size, this shikai also has the power to fight its way through just about anything it comes in contact with, even if it’s something as intangible as a void.
Before manifesting his bankai, Kenpachi’s fight with Gerard Valkyrie proves that Nozarashi should not be taken lightly. How could Aizen’s hypnosis counteract this shikai’s overflowing animal reiatsu?
7 No Chance: Zangetsu – He is no match on his own against Aizen, as Ichigo has already tried against him several times
Zangetsu and Ichigo have tried to take down Aizen multiple times, only succeeding once when Ichigo manifests his full reiryoku and directs it against him in a single black blast of energy.
By himself, this zanpakuto is no match for this villain, even including the fact that Ichigo has not seen Kyoka Suigetsu’s trigger point and is therefore not affected by her Perfect Hypnosis. Also, all you can do is throw Getsuga Tenshos, there isn’t much depth or complexity of combat.
6 Could defeat Aizen: Ichimonji – Yhwach may be too fast for Aizen to catch up
Ichimonji’s most impressive technique is his ink-based calligraphy: activating it allows its wielder, Ichibei Hyosube, to fragment his opponent (or his abilities) by taking their “names”. It does this by splashing a unique variety of black ink in any direction you choose.
Furthermore, he calls himself the “master” of anything made up of “black”, leading to a number of strange but powerful abilities. Most importantly, Ichibei quickly throws Yhwach during the early rounds of their battle, which is evidence enough that Ichimonji can destroy Aizen.
5 No Chance: Tenken – The display of power he had during the Karakura Town arc showed that he had no potential
Tenken, Sajin Komamura’s zanpakuto, is a great projection of his entire body, except that it appears one part at a time. It usually manifests the part of the sword, wielded by a disorganized hand, but it can also produce others.
During the false city of Karakura arc, Komamura draws out his bankai, the magnificent Kokujo Tengen Myo’o, to defeat Aizen and avenge his friend. However, the latter cut it off effortlessly, so there is no doubt that his shikai will get the desired result.
4 Could defeat Aizen: Minazuki – The wealth of swordplay and offensive powers could defeat Aizen
Minazuki is incarnated as a medical manta ray creature, though his offensive powers would make the most accomplished Shinigami anxious.
Unohana swings his shikai with abandon, slicing Kenpachi Zaraki into pieces with ease and gentleness, killing him more times than either of them can count. This zanpakuto is enhanced by its inimitable user, the first Kenpachi, whose knowledge of swordplay is superior to almost everyone else in Soul Society.
3 No Chance: Sode No Shirayuki – It would be useless in the battle against Aizen as he is too slow
Rukia’s newly developed Sode no Shirayuki is not far behind: it forces her entire physiological temperature to drop dramatically, which can transfer to her surroundings.
In her shikai state, she can remove every last ounce of heat from herself, bringing her anatomy to the significant point of Absolute Zero (albeit with a strict time limit not to exceed 4 seconds). In theory, this ice-based technique is enough to stop anyone in their tracks, but battles are rarely about anything other than reiryoku. In short, Aizen is going to vaporize Rukia.
two Could defeat Aizen: Ryujin Jakka – He’s so powerful that even Aizen planned to avoid him
Ryujin Jakka is so powerful that Aizen actively plans to avoid him: understanding that he would have no chance of conquering the old man with his shikai, he goes to the trouble of creating a new Arrancar, Wonderweiss Margela, with the help of his hogyoku.
This act is done to allow the villain to access his final ambition, the Royal Kingdom, as controlling Ryujin Jakka is the only possible way for Aizen to avoid the old man. His overly careful strategy is clear proof of the unmatched intensity of Yamamoto’s shikai.
1 No Chance: Senbonzakura – Byakuya’s Shikai is far superior to its previous editions
Senbonzakura is a spectacular zanpakuto, not to mention how exquisitely beautiful its sakura-themed flower leaves are. It is very efficient in the various facets of combat, from offense to defense, through extended range and pinpoint precision.
Published its instructions under the tutelage of the Royal Squad, the Byakuya shikai is far superior to its previous editions, as well as much larger in scope and size. However, all Aizen needs to do is free Kyoka Suigetsu once and no more Senbonzakura.
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