Due to the economic downturn, her husband's salary has decreased, and she has to work part-time to support the family finances. Tsujimura, the manager of her part-time store, takes good care of her, and Kou, who is shy about others, completely forgives her... However, Tsujimura's relationship with women is not going well due to her substandard big dick, so he uses her as an outlet for her desires and pushes her down. The depths of Kou's vagina reached countless climaxes due to the shock she had never experienced before.