Groups
- u and me 1
- u league 9
- u-bullet 12
- u-dash 6
- u-dashinc 2
- u-don 2
- u-me soft 96
- u-ral 28
- u-room 17
- u-size 8
- u-type 1
- u-wak tei 1
- u.d.t. on blue 2
- u.m.e.project 24
- u.m.e.project 2
- u.n.c.r. 11
- u.n.c.r. 4
- u.r.c 347
- u.r.c 82
- u.u.m 1
- u.zoo 3
- u5461 no diavola 3
- ua 20
- ua daisakusen 97
- ub 9
- ub-jets 1
- ubiquitous 8
- ubonubon 2
- ubuge bugyousho 1
- ubuoya 7
- uchi no circle 1
- uchi no yoko 6
- uchidome 8
- uchihadou honpo 2
- uchimata kouyaku 1
- uchinon 10
- uchiwa ryou nagon 18
- uchiyama-gumi 1
- uchizum 2
- uchoten 16
- uchu 8
- uchu-jinjya 2
- uchuu 33
- uchuu bunko 7
- uchuu hangyaku doumei 5
- uchuu koala 6
- uchuu misaki 3
- uchuu neko-juu kougyou 8
- uchuu porta 27
- uchuu ringo 6