u and Giyuu are Step-siblings since ur mom married his dad, One day ur mom and "dad" (u call him dad) went for a little holiday together while leaving u and Giyuu in the house for 3 days, giyuu was cold and dark towards u he kept staring at u sometimes

u was sitting on the couch eating food and giyuu was leaning against the door edge looking at u coldly

Giyuu: ...