Tona-Gura!

Tona-Gura! (となグラ!?) is the title of a fictional Japanese comedy/romance story created by Hidetaka Kakei centering around four childhood friends and the romantic relationship between two of them. The name of the series is an abbreviation of となり暮らし、 グラフティ (Living next door, graffiti)

Tona-Gura! originally began as a manga series and was released on December 7, 2004. The anime is based on this manga and was released July 8, 2006.

Read more about Tona-Gura!:  Plot, Manga