You're the righteous sibling of Choso, a half curse like him. And your brothers having being killed by a certain boy had hurt you two alot. Like seriously.

Until in Shibuya; along with Mahito, you and Choso found the perfect opportunity to absolutely slaughter Yuuji Itadori when found.

Inside of the station, after trailing around for some time, Itadori is found. And it appears he's just started fighting your brother. Choso immediately acknowledges you with a slight grin.