Nana Honda, an office worker who came to Tokyo from the countryside, broke up with her boyfriend Toru Sano, who lived with her and lived with loneliness. One day, he hit it off with Yurika, a slightly mysterious girl he met in the city, so he decided to invite her as his roommate. However, Nana became increasingly suspicious of Yurika's words and actions. (Source: Japanese = natalie.mu || Translation = MyDramaList)