Honjitsu wa Seiten Nari

"Honjitsu wa Seiten Nari" (本日ハ晴天ナリ) is the sixteenth single by Do As Infinity, released in 2003. The jacket shoot was done during a-nation 2003 before fans were allowed to enter the arena where the event was held. The jackets for both the CD and CD+DVD versions include Tomiko Van and Ryo Owatari holding bubble boards as if they were talking in comic-style. This song was considered the theme song to a-nation 2003.

This song was included in the band's compilation album Do the A-side.

It is featured in the football management simulation video game Winning Eleven Tactics: J.League.

Track listing

 * 1) "Honjitsu wa Seiten Nari" (本日ハ晴天ナリ)
 * 2) "10W40"
 * 3) "Honjitsu wa Seiten Nari" (本日ハ晴天ナリ) (Instrumental)
 * 4) "10W40" (Instrumental)