Groups
- okazu desu yo 1
- okazu musume 34
- okazuya 2
- oke-tarai 1
- okekan 8
- okeoke 1
- okera pizza 1
- okett 27
- okeyu tei 5
- okfan 1
- okhotsk-kai 3
- okina flying factory | off 166
- okina keikaku 147
- okina utsuwa 51
- okinawa chinkosuu 8
- okinawa taieki gunjinkai 53
- okintama hime 2
- okiraku age 1
- okiraku jidaraku 1
- okiraku rakuchintei 6
- okiraku-tei 2
- okirakudou 2
- okki 1
- okkina tama 12
- okkinoko 5
- okmgmk 2
- oko-san 6
- okochama club 1
- okochama heart 1
- okojo no machi 13
- okojodou 16
- okome drop 1
- okome rice don 2
- okome soda 1
- okome-ya 4
- okomegokoro 2
- okonomi 2
- okosama lunch 133
- okosama pancake 16
- okosamastar company 6
- okota to mikan 1
- okotan pekoe 4
- okoto kyoushitsu 4
- okottei 41
- okra marine 4
- okt 9
- oktm 21
- oku no hosomichi 2
- okubyou yagi 1
- okuchi no okuchi 28