Groups
- rouraku clematis 1
- rouran shoujo 36
- rouseiya 3
- roushinen 1
- route 643 1
- route 7 1
- route venus 1
- route08 1
- route1 141
- route134 3
- route885 13
- royal 18
- royal academy f 1
- royal bitch 207
- royal crown 24
- royal garden 4
- royal milk 9
- royal moon 18
- royal mountain 1
- royal-55at 1
- royal.s 11
- royaluser 1
- royalwatts 70
- royce semicolon 1
- roze 29
- roziura 1
- rpg company 2 471
- rpg tsukuri-tai 3
- rr kenkyuukai 9
- rro 18
- rs 6
- rs factory 28
- rs street 5
- rsag 4
- rst slave 17
- rtam 1
- rtc 5
- rtd 59
- rtou 11
- rtts 1
- ru-vic 2
- rubber cup boys 39
- rubbish heap 1
- rubbish selecting squad 174
- rubens tinctura 10
- rubi-sama wo agameru kai 44
- rubicon 2
- ruburu bon 3
- ruby 1
- ruby eye 3