Groups
- nyancorogashi 2
- nyanko house 2
- nyanko-tei 2
- nyanmilla 2
- nyantama 2
- nyattakaai 2
- nycs land 2
- nyonikujou 2
- o.w.l. 2
- ob 2
- oboreta slyme 2
- obscurite 2
- oc-black 2
- occhoko-cho 2
- ocean chain 2
- oceans11 2
- ochawannomushi 2
- ochiochi 2
- ochitsuke 2
- octopus assault 2
- oddrod 2
- odeko haitatsuin 2
- odireku 2
- oeuvre bijutsukan 2
- offt. 2
- oficina fulcrum 2
- ofuro works 2
- ofuton 2
- oga 2
- ogerwillow 2
- ogofwitch 2
- ogura souko 2
- oguradou 2
- oh no 2
- ohayou girls 2
- ohizumi bakuretsutai 2
- oiz6 2
- oj 2
- ok 2
- ok all right 2
- okaka 2
- okameinko shokudou 2
- okamu-land 2
- okawari no mori 2
- okazuya 2
- okintama hime 2
- okiraku-tei 2
- okirakudou 2
- okmgmk 2
- okome rice don 2