Yakuza In Love, Volume 1

Aoi Ichimura is a member of the Yakuza family known as The Hanagumi ("The Flower Clan"). Aoi has a reputation as a tough macho-man with guts to spare, but in reality he's just a timid guy with incredibly good luck. When he's assigned as the subordinate of fellow Yakuza, Yuji Sakiya, Aoi learns to be manly in a different way... trying to be the perfect lover for Sakiya.