Groups
- lovers plus plus 4
- lovesca 4
- lte 4
- ltt-cann 4
- lucia 4
- lunasummit 4
- lunatic wings 4
- lylehout 4
- lyos. 4
- lyric. 4
- m-o 4
- m.h. bokujou 4
- macaron sketch 4
- macca star 4
- macchina heavy industries 4
- maccho dandy 4
- mach one 4
- machikadoya 4
- madaraya 4
- madscript 4
- maebaya 4
- magella 4
- magic monster 4
- magical labo 4
- magicaldelta dot com 4
- magma-bb 4
- magna-bross 4
- magnitude 711 4
- maguro koubou 4
- maho-bin 4
- mahupoko 4
- maibotsu 4
- majo no ie 4
- majutsushi shujutsuchuu 4
- makkurona 4
- makotonet 4
- makushiro 4
- mamaldasia 4
- mamegorou books 4
- mametarouya 4
- mamex 4
- mamma mia 4
- manam 4
- manaya honpo 4
- mandoragora striker 4
- mangan 4
- manji land 4
- manji spanking 4
- manjuu x 4
- mankan zenseki 4