Yui encourages Yoshihiro to make a move on her mother, Mao, but the plan backfires when Mao asserts her dominance, forcing Yoshihiro into a submissive position that triggers childhood traumas. While Shiori is captivated by Mao's authority, she and Yui continue to manipulate the perverted manager through sexual encounters and blackmail. As Yui pushes Yoshihiro toward a diet in exchange for future rewards, an unexpected visit from Mao and the store owner prompts Yoshihiro to conceive a new, risky scheme.