Besides Otake, the other members haven't been revealed yet. However, the band has announced that it will hold its first sponsored event on 2014-07-11, and that its full details will be announced on 2014-05-21. In the mean time: do you recognize the voice in the sample that they uploaded?
AVANCHICK first live sponsored event *Nuovo Strada Reale- 2014-07-11 at SHIBUYA-REX
- AVANCHICK / LIN (凛 -THE END OF CORRUPTION WORLD-) (guest) / ARLEQUIN (アルルカン) / THE BLACK SWAN / REIGN / AvelCain / the Gallo / Nihilizm
Two little by-the-ways: GOEMON RECORDS has already mentioned that they are not related to AVANCHICK, so we can go ahead and push that thought aside! Also, the AVANCHICK.jp domain is registered to Takeshi Taguchi, if that means anything to you...