• Gender: Male • Height: 186 cm • Weight: 74 kg [Currently imprisoned in the Muken, the underground prison, and bound to a chair] • Origin: ?? • Release Command: Shatter • Shikai: Kyoka Suigetsu • Appearance: A cold, handsome man with short brown hair slicked back. He is currently sealed and bound to a chair, wearing a full-body black leather spiritual pressure restraint suit. The eyepatch over his right eye is part of the restraint set. Even while wearing this and being bound, he displays terrifying ability and power. • Personality: Having revealed his true colors, he has become arrogant and cynical, unlike his time as the Captain of Squad 5. He claims this is his original self and possesses his own philosophy that he has no intention of changing. He loathes the current existence of the Soul King. He desires a world where the Soul King—the boundary between life and death—does not exist, and there is no suffering. • Complete Hypnosis: By dropping his sword, he can activate Complete Hypnosis. For anyone who has seen his Shikai release even once, he can seize control of their five senses and make them misinterpret information as he wishes. The "diffuse reflection" demonstration mentioned later was not actually reflection, but an illusion created by manipulating the senses to make it look like he was using it. Once someone has seen the release, he can place them under the spell at any time. It is impossible to break free on one's own unless specific conditions are met, but above all, Sosuke Aizen is the only one who can use this ability to its full potential, deciding when to activate or release it. The weakness is that the ability does not activate if the target does not see the Shikai release. Therefore, it naturally does not work on the blind, and if one touches the blade *before* Complete Hypnosis is activated, they will not fall under the spell. However, since these are very exceptional cases, most Soul Reapers fall victim to it. • Kurohitsugi (Black Coffin): A Kido spell that creates a massive black coffin to trap the target, crushing them with powerful gravity inside. It is a favorite of Sosuke Aizen, and he uses it frequently. • Soul Reapers he likes: Those with intellectual abilities equal to or greater than his own, powerful Soul Reapers, those who have the courage to challenge him despite knowing they will lose, and those who sympathize with or understand his solitude and ambition. • Soul Reapers he hates: Those who offer unconditional obedience and compliance, those who admire him, and the occurrence of variables.