Naisho no Otome Revolver

The story is about a High School student named Tachibana Hinata, who's goal is to be recognized as a manly man. The problem is that he looks exactly like a girl and is constantly bullied by his peers because of this. He is gifted the power to become a gunner princess fighter and hopes to use this newfound strength to prevent the bullying and finally become manly. (Source: MU) Included one-shot: Kurage no Koi (Kurage's Love)