Hiroko settles into her tutoring duties at the mansion only to find her composure shattered after accepting tea from the elder sister. Awakening in a vulnerable state, she discovers the siblings' coordinated intentions and the startling truth hidden within their household. With her freedom now in question, Hiroko must summon every resource to resist their calculated advances while grappling with the consequences of her captivity. The episode heightens the psychological tension as the tutor's predicament deepens under the sisters' control.