Riko, who repeatedly engages in "papa-katsu," encounters a new "papa" named Higashi. Though they are completely opposite in every way, as they interact, they gradually open their hearts to each other. However, Higashi has a hidden agenda: he is writing a "papa-katsu reportage." This is a story of life and death, and love, inspired by youth. This work, which sparked a huge discussion on pixiv, has been significantly revised and expanded, with over 30 new pages added, and is now finally published in book form.