Kyō no Go no Ni

Kyō no Go no Ni (今日の5の2, Kyō no Go no Ni, "Today, in Class 5-2") is a Japanese seinen manga series created by Koharu Sakuraba, the author of Minami-ke. It was originally serialized in Kodansha's Bessatsu Young Magazine from 2002 to 2003, and the twenty-two chapters were later collected together in a single tankōbon volume along with two extra chapters and published on November 11, 2003, by Kodansha. The main premise of Kyō no Go no Ni is the school life of the fifth year class 5-2 (age 11–12), focusing on an elementary-school boy named Ryōta Satō.

In 2006, Shinkūkan produced a four-episode original video adaptation (OVA) directed by Makoto Sokuza. The OVAs contain a special audio track in which the female characters' voices are replaced by members of the idol unit Sweet Kiss and were released in two versions: original and special edit. Xebec produced a thirteen episode anime adaptation directed by Tsuyoshi Nagasawa, unrelated to the OVAs. It first began airing on TV Tokyo between October 5, 2008, and December 28, 2008. an OVA version of the anime was released in 2009, directed by Tsuyoshi Nagasawa, featuring the same cast as the anime.