Groups
- maguro beya 12
- makiwari tornado 12
- makunieru workshop 12
- mamemaru shoten 12
- mamoru soup 12
- marshmallow x whip 12
- massala 12
- megaromaniac 12
- melodiya 12
- miimui 12
- miso 12
- mitsu 12
- mobneko 12
- mochi to shiawase 12
- mochimochi cute 12
- moe shoujo ryouiki 12
- mokoke 12
- momo no kanzume 12
- mono letter 12
- monochrome 12
- monteriakitto 12
- monukenokara 12
- morbid lovers 12
- morisoba iccho 12
- motachi 12
- mouret 12
- mumumu 12
- munmun dou 12
- namacyoko 12
- namasute koubou 12
- nanaban chamaru dou 12
- nanairo momogumi 12
- nanka no su 12
- nano royal 12
- neetest 12
- negi to nakoudo 12
- negoroya 12
- neko no odeko 12
- neko work h 12
- nekomaru shouten 12
- nekomaruya 12
- nekonin-so 12
- nekonohoshi 12
- nerumanekin 12
- new york spirits 12
- newtec 12
- ngl 12
- nico 12
- nippa ichiba 12
- niwatori 12