I'm going to third the suggestion by micster and suggest some Malice Mizer too. Though if you don't really like N.p.s.n.g.s or ILLUMINATI, I'm going to upload something else:
Au Revoir
Le ciel
The more popular singles from their major days. They belong to the softer stuff that MM made with Gackt, compared to the 2 you listened to.
I'm desperately out of touch with the J-Rock scene these days though. Maybe I should get some of these recommendations too.
