Kouji Aiba has been living a school life unrelated to girls until a strange phenomenon called “loss time” occurs, where time stops for only one hour per day. In such a still world, Kouji wants to regain his youth after meeting a young girl named Tokine Shinomiya, who has a scarlet eye that can move during loss time when she is stopped. In a world where only two people move, the distance gradually decreases, and eventually, Kouji's feelings for Tokine change to first love. But Tokine seems to have a big secret that obstructs her thoughts.

Hatsukoi Loss Time is an adaptation of Yuuki Nishina's novel of the same title. It was published in Polish by Dango from October 12, 2020, to November 5, 2020.