| Naitari Shinaide/Red x Blue | |
| Cover: | Naitari_Shinaide_CD_Cover.jpg |
| Type: | single |
| Artist: | Masaharu Fukuyama |
| Album: | 5 Nen Mono |
| Released: | December 1, 2004 |
| Genre: | J-pop |
| Length: | 18:04 |
| Prev Title: | "Niji/Himawari/Sore ga Subete sa |
| Prev Year: | 2003 |
| Next Title: | Tokyo |
| Next Year: | 2005 |
is the nineteenth single by Japanese artist Masaharu Fukuyama. It was released on December 1, 2004.
| Release | Chart | Peak position | First week sales | Sales total |
|---|---|---|---|---|
| 28 March 2001 | Oricon Weekly Singles Chart | 1 | 101,136[1] | 196,667 |
| Oricon Yearly Singles Chart | 46 |