MM Gakuen Gasshoubu (MM学園合唱部; MM School Chorus Club) was a NICE GIRL Project! group formed on April 4, 2009 to promote the anime Gokujou!! Mecha Mote Iinchou, in which Ogawa Mana voiced the main character, Kitagami Mimi. Their songs were written and composed by Tsunku under the alias Nijuukyuu-sensei, and published on the TN-mix label, which is handled and distributed by the Pony Canyon record company. From their third single onwards, they were credited as Kitagami Mimi (CV Ogawa Mana) with MM Gakuen Gasshoubu, and Ogawa Mana provided the main vocals while MM Gakuen Gasshoubu provided the chorus.
On April 10, 2011, MM Gakuen Gasshoubu concluded activities when Gokujou!! Mecha Mote Iinchou finished airing.