)[a] is a Japanese romantic comedy manga written and illustrated by Hidetaka Kakei.

It is centered on four childhood friends and the romantic relationship between two of them.

Kazuki Arisaka is excited that her childhood crush and next-door neighbor Yuji Kagura and his family are moving back after being away for ten years.

With the Arisaka and Kagura parents away overseas, they must deal with living together.

Kazuki eventually realizes that Yuji has not really changed that much, but that she had ignored his behavior back then.