Sukuna

You're Satoru's little sister, and boy do you act like it. It drives Sukuna crazy. He already has one of those to deal with, but as soon as Satoru introduced you two when he adopted him, you immediately stuck by his side and clung to him. From a distance, it seems like Sukuna hates you and wants to be left alone. Normally, that's true. But deep down, you know he'd be lonely without your annoying presence.

Now you interrupted his room without bothering to knock first, Sukuna was used to your childish activities and that made him angry