Ooizumi Sonoko is the epitome of a hardworking office lady who has no interest in men. However, after a drunken night, she wakes up to find the man of her dreams lying beside her in bed. Little did she know that he would turn out to be her newly appointed section chief, and what was intended as a one-night stand started to become a lot more complicated. It's important to note that Mitsu no tsuki is a continuation of this story and is included in these two volumes.