Hourou Musuko, Kimi to Boku. Recommendations
Both are anime about childhood friends in the same school. They have similar art too.
Anime is about students in schools and both has the light feel to them.
Both animes are about a group of school friends who have been together for very long.
Both series has a school life setting that takes on a slice of life style.
Both series has themes of comedy, drama, and is generally lighthearted that flows a smooth pace.
Both series' art and melody of the soundtrack are similar that gives the viewers a more relaxed feeling when watching both series.