第 5 集: 體育祭準備期間，Keiichirou 與幽靈 Datto 結為好友
While Keiichirou prepares for the race in the school's sports competition, he meets a young boy and befriends him. The boy is a ghost, known as Datto (だっと), with two distinct personalities: one of which is a boy, who can run barefoot at incredible speed; the other is a diabolic hare-like scythe demon. Ever since the boy died when he was hit by a car while training to win the same race Keiichirou is now preparing for, he slashes off and gathers legs of sprint runners. The ghost decides to prey on Keiichirou as well, but when Satsuki tells him that Keiichirou believed him to be a friend, he redeems himself and even stops his evil alter-ego from slashing off Keiichirou's legs when he was about to win the race. With the fall of his evil counterpart, Datto's spirit is freed. (Source: Wikipedia)