"I don't want you to show such a cute face to anyone but me..." Sakura and Shiraishi are rival colleagues in the sales department. They attended the same university and were even part of the same club. Their paths cross again when Shiraishi coincidentally joins the same company as Sakura. Shiraishi is a friendly and outgoing guy, to put it simply... he's a bit of a playboy! Sakura is struggling with her new client contracts when Shiraishi offers to support her. Thanks to his help, she successfully secures a contract and feels overjoyed. However, their celebration is short-lived when they miss the last train and end up spending the night together in the only available room! Even though they are familiar with each other, spending the night together in such close proximity is quite unexpected! Moreover, with Shiraishi wearing a yukata, Sakura's heart can't help but flutter uncontrollably... Will their rivalry at work hinder their growing feelings for each other? A passionate and adoring love story unfolds...