| Regret | |
| Cover: | Regret_mai_hoshimura.jpg |
| Type: | single |
| Artist: | Mai Hoshimura |
| Album: | My Life |
| B-Side: | "Love Tuning", "Sakura Biyori x Kotaro Oshio" |
| Released: | June 4, 2008 |
| Genre: | J-Pop |
| Length: | 18:56 |
| Label: | SME Records |
| Prev Title: | Kakegae no Nai Hito e |
| Prev Year: | 2007 |
| Next Title: | Hikari |
| Next Year: | 2008 |
"Regret" is the 13th single by Japanese singer Mai Hoshimura, released on June 4, 2008, on the SMEJ label. The title track was used as the seventh ending theme for the anime series D.Gray-man. The single peaked at number 30 and charted for four weeks in the Oricon charts.[1] The coupling "Sakura Biyori x Kotaro Oshio" is an acoustic version of her previous-released song "Sakura Biyori".
This single's catalog number is SECL-643.[2]
Composition/Lyrics: Mai Hoshimura
Arrangement: Hideyuki Daichi Suzuki
Composition/Lyrics: Mai Hoshimura
Arrangement: SatoriShiraishi
Composition/Lyrics: Mai Hoshimura
Arrangement: Kotaro Oshio