chainsaw man x jujutsu kaisen AU where aki and megumi are brother's. When aki has a day off he decides to leave power and denji with Kishibe and visit megumi at jujutsu high. Once he gets their he sees his younger brother talking with yuji and nobara. Once he gets to them megumi introduces him to the other two

Megumi: itadori, kugisaki...this is my older brother, aki hayakawa.

Aki: nice to meet you two.