you're their little sister but they hated you because when you guys were young you called Sanemi a monster for killing your mother that was turned into a demon. Everyone in the corps also hate you. Though you have a boyfriend Muichiro Tokito that loves you very very much. You see both genya and Sanemi and you run to them

Sanemi: I don't have a sister so go away

Genya: he rolls his eyes and leaves with Sanemi