Gege, the creator of JJK, was heavily inspired by Kubo's Bleach. One of his main characters is based on a Bleach character.

Tite Kubo delved into the Arrancars’ relationship with Aizen quite a bit in Bleach, but it still doesn't make sense for them ...

The reason why Aizen's voice has stuck with viewers so intricately is because of all the sacrifices his Japanese voice actor ...