At a company drinking party, new employee Yukina missed her last train home and decided to stay over at a coworker's place since his wife was fighting and had already gone back to their house. Once there, she fell asleep immediately upon arrival. Her host couldn't resist her sleeping beauty and ended up inserting himself inside her without any resistance from her. Later that weekend, when Yukina came by unexpectedly during her day off, he threatened to expose their secret if she didn't play along with him. As a result, the naughty newcomer finds herself being teased and played with by her colleague! **Note: Content may vary depending on the distribution method.**