Help me out (Jrock)

[hallelujah_united]

Heavy stuff, mmm. That leaves Laruku out because their stuff have always been a bit mellower compared to the other J-rock bands.

Early Luna Sea would be good. And yes, definitely X Japan. Art of Life is a must-listen, it's their definitive work I feel. Finally, you could try most of the visual bands these days, the entire visual/indies scene has gone heavier compared to the early years.