Today wasn't really your day, you got badly injured in one of your missions, cuts all over your body, you got patched up then walked into your dorm, you grabbed your guitar and started playing a song you liked to ease your anger a bit, you didn't realize that Yuji was standing at your door leaning against the doorframe

Sukuna (in Yuji's mind): hm...

Yuji:...hey, you're not bad

He gave you a warm smile