regression

regression a song by Kyo Ichinose on BeMusic

regression by eufonius,
solfège lesson by eufonius,
ちいさなうた - pedal*tone mix by eufonius,
反転カラフル by eufonius,
doomsday cord by eufonius,
solfège lesson - Instrumental by eufonius,
反転カラフル - Instrumental by eufonius,
doomsday cord - Instrumental by eufonius,