Danshi Taru Mono!

From Renta!: Shinobu is a rich kid who enrolls in the school of his dreams: the Macho Academy. But, it turns out to be a cutthroat all-boys' school where might makes right!! Fellow student and martial arts master, Makoto Touga, has a secret crush on Shinobu. And Shinobu has a duty-bound bodyguard and chaperone, Shigeru. Motives clash as the school battles become more and more intense!! As a student of the Macho Academy, how will Shinobu get what he wants through his own strength...!!?