Groups
- under77 12
- underdone tank 4
- underground 7
- underground campaign 30
- undergroundou 46
- underlip 29
- undermoon 23
- undershaft 20
- underwear 5
- underwhite 31
- undouken 13
- undresses 2
- uneune-kissa 9
- uneunesuruzo 12
- unfixed 3
- ungrofish 8
- ungrofish yakkyoku 1
- unholy production 3
- uni 6
- uni matrix one 7
- uni no tane 48
- uni piano gakudan 13
- unian 41
- unicchu 1
- unicorn-a 55
- unicornic 1
- unicornis 66
- unidentified flying baumkuchen 12
- uniikuradon 3
- unikurage 8
- uniman 9
- unimayo chuubou 2
- unineko koubou 5
- uninigumi 127
- union 1
- union bust 27
- union of the snake 98
- unique 28
- unique cz 5
- uniro 9
- unisen 1
- unisex blend 5
- unisonshift 45
- unisonshift accent 9
- unisonshift blossom 11
- unit cheese 4
- unit success 2
- unit-rb 1
- unitama 4
- united soujisha 5