TWIN APES (ツインエイプス) forms.
It is commonly known that the bassist of BLUME was Seiji (誠司), formerly of EX-ANS. In an article about BLUME in the January 1997 issue of M GAZETTE, their bassist is listed as Saitou Seiji (斎藤 誠司) along with a picture that is clearly Seiji (誠司) from EX-ANS.
The full name Saitou Seiji (斎藤 誠司) mentioned in that article is very similar to the full name of Saitou Seiji (齊藤 誠司) from TWIN APES. Given that TWIN APES also features former EX-ANS member Nobuyuki Suzuki (鈴木 伸幸), it seems likely that Seiji (誠司) from EX-ANS is the same person as Saitou Seiji (齊藤 誠司) from TWIN APES.
This is completely unconfirmed and no other source seems to make this connection, but it would be an oddly specific error for the magazine to make, especially given that it was published more than a year before TWIN APES formed.
The band goes major through NIPPON COLUMBIA sublabel C²HR.
TWIN APES disbands
TWIN APES was a non-vkei band. They were active from 1998 to 1999 and are now disbanded.