Sekinin Tottekureruyona Ijiwaru Osananajimi no Ijouna Aijou責任取ってくれるよな?～イジワル幼馴染の異常な愛情～ ; You'll Take Responsibility, Right? A Strange Relationship with a Childhood Friend; Sekinin Tottekureruyona Ijiwaru Osananajimi no Ijouna Aijou (Official)