Ryuguji Iku is a frequent lyricist of WACK group songs, with their first credits going all the way back to BiS (First Generation)’s debut album. They are speculated to be either Watanabe Junnosuke or Matsukuma Kenta, neither have confirmed the true identity of this mysterious character.
BiS (First Generation)
- Teenage Flavor
- Magnolia
- IDOL
- IDOL is DEAD
- Chelsea
GANG PARADE
BiSH
- Saraba Kana
- OTNK
- IDOL is SHiT
- GiANT KiLLERS
- SMACK baby SMACK
- STACKiNG
- I have no idea.
- Pyo
- LiE LiE LiE
- USO
BiS (Second Generation)
- Human after all
- Mystery Asshole
- SOCiALiSM
EMPiRE
BiS (Third Generation)
- This is not a love song
- TRAP
- DESTROY
going going WACK 