SERIOUS-AGE

 is the fourth major single by Faylan.

Tracklist

 * 1) SERIOUS-AGE
 * 2) spring ~Kimi to no Melody~ (spring~君とのメロディ~)
 * 3) SERIOUS-AGE (off vocal)
 * 4) spring ~Kimi to no Melody~ (spring~君とのメロディ~) (off vocal)