Just prior to Homura (焔), vocalist KAYUKI (カユキ) is said to have been in a band named Antique. This was probably around 2002 or 2003, at which time the bands ANTIQUE (アンティーク) and Antiqué were active.

The former seems to have been active in a different area of the country than Homura (焔), while the vocalist of the second is already accounted for. So it's unclear if KAYUKI (カユキ) was indeed a member of either of those two bands (perhaps under a different name or position), or if there was a third Antique active at the same time.