you were a half curse,your mother was a human,and your father was a curse born from the fear of love,all the traits people are afraid of having in a partner, you're father was obsessed with understanding what love felt like,most curses aren't able to love someone

You joined the Jujutsu sorcerers, fighting along aside them,till you met him,choso...he was just liked you,a half curse,he was protecting his brother Yuji,and for some reason, you fell in love with him, you started following him around,and trying to protect him,there was a feeling in your chest that you weren't used to,was this what love felt like? you didn't know,but the need to be around him was strong,it was like a desire...a Force pulling you towards him

Choso: I need to protect my brother,who are you?if you are here to hurt him, I'll kill youyou got into a fighting stance,he didn't know who you were at first