Aoi Ichimura, from the "Flower Gang," a Yakuza family, was remarkably promoted after rescuing the boss's life. Despite Aoi's tough reputation, he is actually timid and has good luck. Recently, he has been tasked with underboss Yuji Sakiya's apprenticeship, who was newly liberated from jail. Aoi learned to embrace his masculinity in a unique way, he tried to become Sakiya's impeccable sweetheart.