SUGGESTIONS - Downtempo Metalcore
Mary's Blood - Power Metal
Rokugen Alice - Melodic Power/Gothic Metal, reminding myself of this awesome band
Hayashibara Megumi - only the songs from Slayers anime series
five months old - a doujin Progressive Metalcore band who plays re:arrangements of aikatsu songs.
FIESTAR, i know its not japanese, but its korean, and i only listen to one song, Apple Pie, cant get this goddamn song out of my head and when i start playing it its on for 2-3 hours nonstop.