Sei has seen 52 bands.

Band Concerts Seen
  Miyavi 11 concerts
  An Cafe 2 concerts
  BB Brunes 2 concerts
  MUCC 2 concerts
  VAMPS 2 concerts
  ムック 1 concert
  Alice Cooper 1 concert
  ATARASHII GAKKO! 1 concert
  Black Stone Cherry 1 concert
  Boulevard des Airs 1 concert
  Bruno Mars 1 concert
  Cinema Bizarre 1 concert
  DaizyStripper 1 concert
  Despairsray 1 concert
  Dream Theater 1 concert
  Earl Sweatshirt 1 concert
  Earlwolf 1 concert
  Eminem 1 concert
  Flow 1 concert
  Golden Bomber 1 concert
  HANGRY&ANGRY 1 concert
  Jessie J 1 concert
  Kamijo 1 concert
  Kanon Wakeshima 1 concert
  Kendrick Lamar 1 concert