Kimi ha Harumade Boku no Inu

Misono Benio has it all—good looks, a prestigious family, and a place at the very top of his school’s social hierarchy. As a popular alpha, he’s constantly surrounded by admirers and never short of someone to fool around with.

The only exception is his classmate Fujinami Ao, an aloof honor student whom Misono assumes is also an alpha. Unlike everyone else, Fujinami has absolutely no interest in sucking up to him.

But one day after school, Misono comes across Fujinami being attacked by another alpha and discovers the secret he’s been hiding.

Fujinami is actually an omega.

Overwhelmed by Fujinami’s heat-induced pheromones and unable to resist his alpha instincts, Misono ends up sleeping with him. Fujinami then turns the situation to his advantage: to keep other alphas away from him, Misono must become his fake boyfriend and his “guard dog” until graduation.