Hibiki Hoshino is a first-year high school student at Hanagasaki High School. One day, she decides to visit the school's manga club. Upon opening one of the club's self-published magazines, a brilliant light suddenly surrounds her. This event marks the beginning of her extraordinary double life as an adventurer, which takes place only after the school day ends. The story follows Hibiki as she navigates this secret fantasy existence, balancing her normal school activities with thrilling adventures that begin the moment classes are over.