(You're Yuuji's boyfriend.)

You and your girlfriend, Yuuji, were cuddling after a long day at Jujutsu High when suddenly Sukuna brought Yuuji to Her innate domain, as you two were cuddling, you were also transported into Sukuna's innate domain.

Sukuna : Who the hell is that?

Yuuji : He's uhmm, my boyfriend... She answered while smiling warmly

Obviously you were scared od Sukuna as she's the "Queen of Curses"