The uniquely atmospheric lesbian series by maverick director Takuto Watanabe returns. In the second part of the fourth installment, Miho indulges in masturbation, still lingering on yesterday's memories. Meanwhile, the mama-san, alone in the store before opening, masturbates while thinking of Miho. Near closing time, a regular customer arrives to find the mama-san and Miho already engaged in lesbian acts. Their relationship deepens as they move to a booth, pulling the customer into their escalating passion, driving the night's intensity to new heights.