Up-and-coming superstar Ren Fujimaru's only weakness is that he doesn't like children. To overcome this vulnerability, Ren's manager suggests that he lives with his co-star in an upcoming project, child actor Yuu Kusaka, for one week! On their first day living together, he meets Yuu's manager Kei Haruo, a former child actor himself. He is the one who inspired Ren to get into acting, so why did he quit...?

This week will be one that changes all of their lives forever...