This is the first installment of the 2023 collaboration project between the TV series Shower Frame and KADOKAWA's BL TV series label "tunk". In this work, although they are each other's first love and first experience, the two people who were torn apart by something that happened 10 years ago will describe the story until they are connected again. Takizawa Kazuma, who returned from the United States after 10 years, reunited with Ishihara Ren, a friend from junior high school and the person he met for the first time, at the advertising agency where he entered as a new employee. Kazuma was in high spirits because of the unexpected plot, but for some reason Ren was cold and tried to avoid the topic of junior high school. Under such circumstances, the two had sex again one night.