Shiratori Ryuushi is a young artist who dreams of writing and illustrating children's books. To achieve his goals, he decides to move to Tokyo for training in this field at one of the local schools. He is to live in the Narutakisou estate with his distant cousin, Aoba Kozue. Upon his arrival, he is welcomed by her, the owner, and the other residents, who live together like one big family, helping each other out.
