Umegatani Boys' High School -Romance of the Dark Princes-

Haruka Ichijou became the school's kingpin because of his princely good looks and wild aura. For some reason, something about Mario Sena from class 1-B - the only class not under his thumb - intrigues him. The two go to the roof to settle things man to man!! ...Until Haruka makes a very unexpected advance...! Also included is a story about a quiet tough guy and his younger childhood friend, as well as the story of a loyal underling and a cool beauty. This is an anthology about love so sweet it hurts between delinquents in an all-boys school!!

(Source: Renta!)