Sosuke Aizen

Kyoka Suigetsu takes complete control of the sense of sight from the moment its release is witnessed — knowing about it is no defence

Kyoka Suigetsu places anyone who sees its release under complete hypnosis

The hypnosis affects all five senses, so it cannot be reasoned around

Manipulates allies and enemies across a century-long plan

Casts high-level kido without incantation

Anyone who has seen the release once remains affected afterwards

Blocks a captain's attack barehanded, without releasing his sword

His defeat comes from a character who never saw the release, which is the stated counter