Len is a wannabe superhero who protects the city of Yorune Town from evil. But no matter what he tries, the people just don't recognize him. The truth is, Len is just a lousy superhero. Yearning to prove his worth, Len decides to fight a real supervillain. But when the "supervillain" threatens his sister Rin, things just got much more real... Will Len be able to defeat him? Or is being a superhero more dangerous than he thought?