An apartment where 21 men without girlfriends live. Mitani Akari becomes the manager for a day and helps out these troubled lambs who have complexes!! She gently leads the boys who are nervous because it's been a while since they've been around a woman! She listens to their troubles and gently teaches them how to play in a way that suits them. For the M-man, she even plays with him in a sadistic way, just as he wishes! In the end, it's a big orgy for all the men with small dicks and special fetishes!! It's resolved by inserting it raw into 'Akari Pussy'!!