Ryūto came to Tokyo from Kyoto because he wanted to get admitted to Nikko High School, a school that boasts the largest collection of books among high schools in Japan. However, the condition for his father to let Ryūto come to Tokyo was that he must live in an acquaintance's apartment, Taisei Mansion. After Ryuken moved in, many unexpected things happened, he met many weird people, and he also met his first love... (Note: This article is a love story of Nippon and will be updated from time to time.)