Kämpfer

Natsuru Senō wakes up to discover one morning that he has transformed into a woman, upon which a stuffed animal tiger, Disemboweled Tiger, who introduces itself as a messenger, tells him that he has become a Kämpfer, which must do battle with other Kämpfer; since Kämpfer must be female, Natsuru transforms into a female version of himself.

Natsuru stops Akane from shooting Kaede and the attacker escapes when the bell for class rings. Natsuru realizes that the enemy also goes to his school and becomes wary of the danger and cautious of the other girls around him.