Osananajimi na Kimi ga Tamaranaku Daisuki!

Asahi Oota, a first-year high school boy, has a childhood friend of the same age who lives next door. His name is Kazune Murasinomiya, and he is a precious angel who is Asahi's favorite person in the world. Cute and sometimes cool… Asahi loves Kazune so much that he can't help it… this is a comedy about Asahi's happiness!

(Source: Gangan Online, translated)