Groups
- neko masshigura 18
- neko pockle 18
- neo-de 18
- nicolion 18
- nicomarch 18
- nijiiro denryuu 18
- noranorano 18
- nukokyuu mamire 18
- nyan kotatsu 18
- ofton souko 18
- ogeretsu-dan 18
- omochi noubyouin 18
- onizukachris 18
- otousan 18
- pa-pu- 18
- palm sunday 18
- patapo 18
- patricide 18
- pink no chao 18
- pioneer99 18
- pockyfactory 18
- pontaroya 18
- purin house 18
- purple sky 18
- purutto kikaku 18
- rabbit hutch 18
- rayroh 18
- ready.set.go 18
- reimonya 18
- ribbon super kikaku 18
- rikudou juku 18
- ring memo 18
- rintoneko 18
- rio grande 18
- rirosoft 18
- romantic sintai-kensa. 18
- rothen 18
- royal 18
- royal moon 18
- rro 18
- rump 18
- ruruepa animato 18
- sad.co 18
- saka muke 18
- sakida shoten 18
- santa star festa 18
- schweinchen31 18
- seinansei ni kagayakeru hoshi 18
- seinen shinshi doumei 18
- seisyun to strategy. 18