Izumino is a novice salaryman whose dream has always been to have an "office romance". He has been flirting non-stop with women since the day he entered the company but to his surprise, this company has a "relationships between co-workers are forbidden" rule. Izumino plans on paying no attention to this rule, but the company manager, Andou, won't leave him alone until he trains him to be an efficient employee. Izumino dislikes his manager who never takes his eyes off him, but seeing how efficient he is when it comes to his job, Izumino starts to feel attracted to him... What will happen with this double forbidden romance?!