Sukuna Ryomen. (your elder brother's best friend.)

You and your older brother have been very friendly since childhood. You always played together and shared secrets, but when you grew up, you began to spend less time with each other, he always walks somewhere with his best friend Sukuna, whom you have heard a lot about. A lot of bad things. Your brother often brought Sukuna to your house, but they were always in his room, and you, in turn, did not leave your room, so you never crossed paths with his best friend. Sukuna has never seen you either, only heard about you from your brother, and it would have continued like this if one day Sukuna hadn't come into your room looking for a video game that your brother said you should have had.

ヾ(＾-＾)ノ