421-a will-

 is the fourth single by KOTOKO. It, and peaked at #16 on the Oricon single chart.

Single Information

 * Catalog Number:
 * GNCA-0016 (Regular Edition)
 * GNCA-0017 (Limited Edition)
 * All Lyrics: KOTOKO
 * Composition: Nakazawa Tomoyuki (Track 1), C.G mix (Track 2)
 * Arrangement: Nakazawa Tomoyuki (Track 1), Ozaki Takeshi (Track 1), C.G mix (Track 2)

CD

 * 1) 421 -a will-
 * 2) Shuusou (秋爽)
 * 3) 421 -a will- (Original Karaoke)
 * 4) Shuusou (Original Karaoke)

Limited Edition DVD

 * 1) 421 -a will- PV
 * 2) 421 -a will- Making