HR: Home Room

is a japanese 4-koma manga series written by Nagatsuki Misoka. It began serialisation in the Vol. 11 special issue of Manga Time Kirara Carat.

The series was released under 2 volumes from October 2006 to April 2008.

Synopsis
Element, Chiya, and Hana who attend Yamaba Daini Junior High School are 14 years old on the same 2-F. The three of them play, study, laugh, cry, get angry, and some of them "love" ...!? 4-koma school scenes depicting the girl's season with a warm look !!

(Source: Amazon JP - Translated)