J⇔M

J was raised by the yakuza and became a skilled assassin, but his success made him a target. When the syndicate tried to eliminate him, their plan failed, resulting in the destruction of three groups and making J untouchable. Megumi, a third-grader who is half-Japanese and half-American, faces bullying from classmates. After a collision, J and Megumi switch bodies. J now inhabits Megumi's body, while Megumi is in J's. They must maintain their previous lives while concealing the switch. J experiences the challenges of being a girl, while Megumi appears to enjoy her new circumstances.