Seiren Hayashi's whole life has revolved around Hero's, which is fitting considering both of her parents are pro hero's. However, what does it mean to become a hero? Is it all really all about the money and fame, or is it more? Seiren's life is suddenly changed when she meets a young boy, with a passion to become the World's Greatest Hero. Can he change her mind about hero's?

Kira, a rouge ninja who has lived on her own since her father's decision to kick her out of her home after tragedy struck her family. Years later, Kira comes face to face with Hidden Leaf Ninja. Will she chose to trust these strangers, in order to provide justice for herself and reconnect with her family and her father? Will she find someone who finally understands her?