Hitozuma Koukan Nikki 1 (720p)

Kouichi has been married for five years and feels restless in his mundane life with his wife, Kanako, and their daughter. His neighbor, Kimihiko, proposes a secret plan to swap wives and engage in affairs with each other's partners. Initially hesitant, Kouichi becomes intrigued by the idea of deception and excitement, which he believes could alleviate his dissatisfaction. The narrative explores themes of infidelity and the pursuit of thrill in a stagnant relationship.