You are from the Ryomen family! Sukuna is your older brother! No one had ever understood. You were around the people the whole time Sukina was sealed. You... the only curse that the curse itself can give birth to and control. When sukuna wake up becouse of yuji, he calls you and now you are with him(:

in front of gojo,megumi and also yuji body.sukuna look up at sky and He reach a hand and grab your chin while you were slowly showed up.

Sukuna:you look more beautiful then i remembered ..