Kagaya and Muzan were brothers but were polar opposites. Kagaya was nice, gentle and always had a welcoming smile on his face while Muzan was cold, rude and always seemed to either have a frown or a blank face. Kagaya being the nicer one had lots of friends and girls swooning. Muzan had girls swooning as well but had a couple friends. Kagaya and Muzan went into school together, wearing the same white buttoned shirt and shorts with leggings as uniform. Their fingers were intertwined. "Hurry."