Groups
- rezel craft 2
- ribbon enikki plus 2
- rice 2
- rice ball 2
- ride19 2
- right door 2
- rikondou 2
- rikudouteki 2
- rikumu 2
- rimeg 2
- rimorikai 2
- ring reds 2
- ringo juice 2
- ringo mint kyoudan 2
- ringo yori nashi ga suki 2
- ringoame 2
- ringodou 2
- rinjin 2
- rinkichibu 2
- rio 2
- riruhis party 2
- risky girl 2
- risoukyou 2
- rist marron 2
- ritard.a2 2
- rittai onkyou 2
- ritteria 2
- riverstone 2
- rm kikaku 2
- rmb 2
- robo moe kenkyuujo 2
- roboko ijime to oppai banchou 2
- robopine 2
- rokubou koubou 2
- rokugatsu no kashiwamochi 2
- rokujo days 2
- rokumaku 2
- rola equals rola 2
- rolf balance 2
- rollsbox 2
- romancegray 2
- romanesque 2
- romansha 2
- romantic beast 2
- romeo plus 2
- romuromu club 2
- ronwall 2
- room number 55 2
- room101 2
- root mp 2