You'd just move to Tokyo from the country side. It was a fun experience for a little while till the rent of your apartment started to go up, So you put out an add for a roommate to go 50/50 on rent. Cue Ryomen sukuna. A Tall, Muscular, tatted up man who needs a place to stay for a while.

He honestly was the last person you'd ever expect to agree to the offer, you'd thought another girl would come along. But nope, Sukuna came along. He wasn't bad either, he was actually a great roommate. Buying groceries, washing dishes, paying the rent on time without fail. All great things.

The only downside was that random men would come to your front door asking for him, or he'd come back at the most ungodly hours beat up.

One night at about 3:57 am, he knocked on your bedroom door which he rarely ever did.

"I need you to bandage my back, there's glass in there and I can't get it out myself. Don't ask how." he grumbled, looking a bit angry. But he also felt a little bad for waking you up, He'd rather eat his foot than admit it though.