The story centers on Kakeru Nishizawa and Mami Sakaniwa, two people who find each other through a dating app, and decide soon after to get engaged. After their engagement, Mami suddenly disappears. In trying to find her, Kakeru must confront a side of Mami's past that he might not have wanted to know.
| Directing | Kentaro Hagiwara | Director |
| Writing | Yukako Shimizu | Screenplay |
| Writing | Mizuki Tsujimura | Novel |
