Song: Anna ni Issho Datta no ni

Anna ni Issho Datta no ni was the 9th single released by See-Saw and used as the first ending theme for popular hit-anime Kidou Senshi Gundam SEED. Unlike the first opening and following themes, it was what is usually referred to as Anison, a song produced specifically for an anime by an act that is mostly known only to anime fans. Despite that, it enjoyed large popularity and peaked at #5 at the Weekly Oricon Charts, selling overall 173,894 units, making it one of the most successful songs used in an anime that was not provided by a popular J-Pop act.

The song was used as ending theme in the first 26 episodes of the Gundam Seed anime, in the Director's Cut version of episode 28, in the first special edition film, The Empty Battlefield and the game Gundam Seed: Rengou vs. Z.A.F.T. Furthermore it was used as insert song in the normal version of Gundam Seed's episode 28.

In 2006 a rearranged version was released by See-Saw for the Gundam Seed/Seed Destiny The Bridge vocal album.