Kakuu NO Hitobito (架空ノ人々) presumably forms as a special session project.
While multiple names are credited, it has surfaced that vocalist Misa (ミサ) also played bass under the pseudonym Yoshihito Kichida (吉田 嘉仁). Chorus vocalist MAYU also played guitar as Kazuhiko Yoshimi (吉海 和彦). The credited "drummer", QY700, is in fact a drum machine (Yamaha QY700).
Kakuu NO Hitobito (架空ノ人々) was a visual kei project. They were active from 2001 and are currently paused.