First Let Me Strip Off My SeriousnessNewMazuwa Majime wo Nuide kara - Risou no Sefure to Hajimeru Koi ; First Let Me Strip Off My Seriousness -The beginning of Love With An Ideal Friend With Benefits- (Official) ; まずはマジメを脱いでから～理想のセフレとはじめる恋～ ; 일단은 고지식함부터 벗고서