Human Chemical Reaction
"西山さんのベースはマジやばい!"

THE MUSES

SOUL SHAKER

FAKE MASTER

限界

DIZZY TALE

MOMENT DIVE

PHI

FAITH OF LOVE

HITODASHI

TWO OF ONE

虹を目指せ

真昼の月

FAIRY RING

GRAVITATION

PRETTY JIVE

ROCKS IT

I'M YOUR DREAM

MELODY