Uh, this info is wrong. Kami was the drummer for Malice Mizer before Gackt and during Gackt's time with them. After Gackt left Kami passed away and they remained a 4 person group.
GAZ was their drummer before Kami joined. GAZ left Malice Mizer to join Kneuklid Romance while Kami left Kneuklid Romance to join Malice Mizer. It was like an "exchange of drummers", already quite in the beginning, in spring 1993.