Kandachime

Takuma Zushi prefers solitude, often sleeping in class and avoiding clubs. On his way home, he notices a girl entering the woods and follows her. He stumbles upon a duel between two sword experts, competing for control of the "Kandachime," a sword capable of transforming into a human. The girl, Otowa Hagane, is on the verge of losing when Takuma impulsively intervenes in the battle.