Groups
- kengai san 19
- keyspa 19
- khaos distance 19
- kikumizuan 19
- kingyo no suisou 19
- kinkoid 19
- kinomiki no mama 19
- knopf koubou 19
- kodama planet 19
- kodomo to kodomo 19
- kokatsubatake 19
- komickers 19
- kong-chic-show 19
- kotsu 19
- koukyou koukoku kikou 19
- kurodenwa 19
- kurogantetu 19
- kuromogu teikoku 19
- kuroshiba suko 19
- lathimania kyouwakoku 19
- libertaria 19
- little hopper with h 19
- liz 19
- locomocodon 19
- london delly and burry 19
- m-trinity 19
- m.i.r.u 19
- mad paradox 19
- mahiru no tsuki 19
- mama ni wa naisho 19
- mayonaka no acchigawa 19
- mc hanbaiten 19
- mederukai 19
- meisaku network 19
- melody 19
- metal bunshitsu 19
- midnight muumus 19
- mikkamisaki 19
- milimili amuse craft erotica 19
- milk hall 19
- milkpop 19
- mitsunoho 19
- mizuiro ame no ouchi 19
- mizushirazu 19
- mo matsurigumi 19
- mojao 19
- mori no hito 19
- mosquitone. 19
- moumoubox 19
- mui-garou 19