Groups
- mattari nohohon 1
- mattariya 1
- mattete hototogisu 3
- mattsuaya 3
- matyaya 1
- mauboumen 25
- maumau shoujotai 7
- mauntain 1
- mauve 9
- maverick-vava 11
- mawari michi 5
- mawaru gomi no hi 2
- mawaru tsukito usagi 3
- max and cool 25
- maxal 10
- maxi 20
- maxi age 15
- maxi queen 4
- maximum wind 9
- maxiy 4
- maxzheart 7
- may 5
- may club 1
- may no tenshi 34
- may-be soft 76
- maya-tei 6
- mayakan 2
- mayakasiya 10
- mayama13 4
- maybenavy 5
- mayfair 1
- mayfar soft 4
- mayim boy 1
- maymuzika 1
- mayo bukuro 6
- mayo jam 2
- mayoineko 526
- mayoineko kansai shibu 1
- mayonaka 2
- mayonaka g time 2
- mayonaka no acchigawa 19
- mayonaka no funkotsudou 25
- mayonaka no oukoku 2
- mayonaka tsubame 2
- mayoneizu. 1
- mayonnaise bakufu 39
- mayorice suishou iinkai 21
- maytake channel 4
- maythird 4
- mayu koubou 1