Genzo is a monk on his way to Tianzhu (early East Asian name for India). Along the way, he happens to visit a house and meets an old couple. The couple has an adopted son, Taro Yamada (Kenichi Matsuyama). They ask Genzo to rehabilitate Taro who makes trouble with his magical power. Genzo takes Taro and travels to Tianzhu.

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.

Former delinquent Hiroe leads a dreary existence. She meets a boy named Tatsutoshi whose younger sister was killed in a road accident and tries to cheer him up by creating a fake ritual to bring the dead back to life. To turn her deception into reality, she takes Tatsutoshi on a journey to the seaside.