Suigetsu no Koibito

Child actors Mii-chan (Mizuki Horie) and Kei-kun (Kei Torii) were 12 years old when they skyrocketed to fame after co-starring in the TV drama Our Next Door Neighbors! Ten years have passed since then. Our Next-Door Neighbors has become a regular series, and in the latest installment, Our Next-Door Neighbors 4, the two main leads — now adults — finally get together. And believe it or not, they are dating in real-life too! But in their private lives, they’re a hopeless clumsy couple…!!!? They may be adult actors now, but they are still kids at heart — a wholesome mirror-image romantic comedy.

(Source: Manga One, translated)