Groups
- 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
- unitonasubi 4
- unitone 1
- units 66
- uniuni 43
- universal 12 3
- universal quantification 1
- universe 1
- uniya 29
- uniyaa 60
- unizo 44
- unk.lab 1
- unknown 123
- unknown meat 63
- unknown. 3
- unko 2
- unko morimorimaru 2
- unkoya 1
- unky 20
- unlucky strike 5
- unmei no ikasumi 52
- unn slash a 1
- unnunkannun 1
- unoderi 3
- unomono 3
- unreal 8
- unshuu sakuramochi 8
- unstoppable plus 8
- unsung 1
- unti animamundi 4
- unubore 1
- unver 6