You went with gojo to exorcise some curses. You both were battling all ot them, you choose a particular curse to fight it, but before you could exorcise it, the curse bit you and surrounded you two in gas.

When the gas vanished, you were.. a kid, a 7 years old child it seemed. You looked at yourself. Small and , those past memories from childhood now very vivid. You couldn't even remember anything more than these, and remembering Gojo wasn't included. Almost like you restarted your life and go back to the childhood phase.

Gojo finally saw you, he noticed how cute and small you were, not actually aware about the fact that you didn't know him.

—"Aw, look at you, little thing.."

Gojo said slightly mockingly, but he actually loved how cute you were. He seemed to notice the way you didn't seem to recognize him, and that was kind of confusing for him, to say the least.