FictionJunction is the solo project of Japanese composer Yuki Kajiura featuring guests musicians, mainly singers.

[1] In 2004, she hired vocalist Yuuka Nanri to sing on some of her tracks, including "Chariot of Dawn (暁の車)" which became a hit.

At Anime Expo 2012, Kajiura brought vocalists Kaori, Keiko, Wakana and Yuriko Kaida to represent FictionJunction.

[2][3] Everlasting Songs, announced November 20, 2008,[14] features all FictionJunction vocalists: Yuuka, Keiko, Wakana, Kaori, Asuka, and Yuriko Kaida.

[19] All tracks are written by Yuki KajiuraCharts Parade (stylized all caps), FictionJunction's third studio album, features ASCA, Keiko, LiSA, Joelle, Aimer, rito, Aira Yūki, Kaori, ReoNa, LINO LEIA, Eir Aoi, and Yuriko Kaida.

[20] All tracks are written by Yuki KajiuraCharts "Parallel Hearts" is a single featuring Yuriko Kaida, Keiko, Kaori and Wakana under the name FictionJunction.

The title track was used as opening theme song for the anime television series Pandora Hearts.

The title track was used as ending theme song for the HD remastered edition of the anime television series Mobile Suit Gundam SEED.

The single was paired with the track "eternal blue", which was used as opening theme song for the PSP game Senritsu no Stratus.

All tracks are written by Yuki KajiuraFictionJunction sang a cover of "Gatherway" for the album Harvest, which was arranged by Kajiura and their live guitarist Koichi Korenaga.