| Honjitsu wa Seiten Nari | |
| Type: | single |
| Artist: | Do As Infinity |
| Album: | Gates of Heaven |
| Released: | September 25, 2003 |
| Genre: | Rock |
| Length: | 14:13 |
| Label: | avex trax |
| Producer: | Dai Nagao, Seiji Kameda |
| Prev Title: | Mahou no Kotoba (Would You Marry Me?) |
| Prev Year: | 2003 |
| Next Title: | Hiiragi |
| Next Year: | 2003 |
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.