Kämpfer

Kämpfer follows Natsuru Senou, an ordinary high school student who suddenly wakes up one day transformed into a girl. He's told he's now a "Kämpfer," a fighter who must battle others like him, and the twist is that Kämpfers must be female. As Natsuru juggles life between his male and female forms, he gets caught in increasingly chaotic battles and romantic entanglements. His life becomes even more complicated with the involvement of classmates who are also Kämpfers—some friends, others foes. The series blends action, comedy, and gender-bending chaos, all while exploring Natsuru’s dual identity and the bizarre rules of this mysterious battle system.