Hikari no Filament

 is the second single by Takagaki Ayahi.

CD

 * 1) Hikari no Filament (光のフィルメント)
 * 2) Be with you
 * 3) Oh Happy Day

Limited Edition DVD

 * 1) Hikari no Filament (Music Clip)
 * 2) Hikari no Filament (TV Spot 15sec+30sec)