Groups
- mamyoda gumi 2
- man say 2
- mana channel 2
- mangetsu hagure 2
- manjuu futon. 2
- manjyu-umai. 2
- mannenrou 2
- maple pot 2
- marble 2
- marble proem 2
- marfulldou 2
- marge-loop 2
- marginalia 2
- mari mari 2
- mari-chan fc 2
- marimomomo 2
- marinwhip 2
- marisaya 2
- markmax 2
- marley and scrooge shoukai 2
- marshmalloya 2
- maru sankaku shikaku batsu 2
- marudashi samurai 2
- marumari-con 2
- marumaru factory 2
- marumero 2
- marusan 2
- marushe 2
- marys boy 2
- marz 2
- masa no yu 2
- mascot club 2
- masheri 2
- mashumaro hibiki-dan 2
- masop 2
- masshiro club 2
- masuda gunkou 2
- masudaya 2
- masukawa 2
- matango honten 2
- matenrou sougetsu 2
- matenrou wine 2
- matsugaoka yougisha 2
- matsumo no mori 2
- matsumotoke 2
- mawaru gomi no hi 2
- mayakan 2
- mayo jam 2
- mayonaka 2
- mayonaka g time 2