After losing everything in a tsunami, 10-year-old Hana is taken in by 26-year-old distant relative Jungo Kusarino. They live as father and daughter but share a profound sense of loss. Jungo works as a cook for the coast guard, leaving young Hana alone for days at a time. In wintry Hokkaido, Jungo and Hana both desire to fill their empty, love-starved hearts as they set foot into a forbidden world. Eventually, an elder benefactor in their small town learns of their illicit relationship. When he tries to separate them for Hana's own good, it provokes her emotional rage. Soon after, a murder quietly occurs atop the ice floes. With their dark secret, Jungo and Hana escape to Tokyo. However... Written by Anonymous

Struggling manga author Satoru Fujinuma is beset by his fear to express himself. However, he has a supernatural ability of being forced to prevent deaths and catastrophes by being sent back in time before the incident occurred, repeating time until the accident is prevented. One day, he gets involved in an accident that has him framed as a murderer. Desperate to save the victim, he sends himself back in time only to find himself as a grade-schooler one month before fellow classmate Kayo Hinazuki went missing. Satoru now embarks on a new quest: to save Kayo and solve the mystery behind her disappearance.