In 2006, Ito reprised her role as Reira for the sequel of the film singing the theme song, "Truth".

"[2] Initially, when Ito told her parents of plans to become a singer they disapproved of her choice.

[3] In 2005, Ito was chosen to portray Reira Serizawa, the vocalist for rock band Trapnest in the film adaptation of Ai Yazawa's popular manga series Nana.

"Endless Story" debuted on the Oricon chart at the #2 position, and[4] is a cover of the English ballad, "If I'm Not In Love" by Constant Change, formerly Dawn Thomas.

[6] At the end of the year, Ito released her ninth single, "Urban Mermaid", which debuted at #10 on the charts.

[4] Her tenth single, entitled "Anata ga Iru Kagiri: A World to Believe In", was released in on January 16, 2008.

[7] Dion originally released this song on her latest English album Taking Chances.

[13] In June 2008, Ito collaborated with popular Japanese music producer Takeshi Kobayashi (who produced music for Mr. Children, a famous Japanese band) and Russian conductor Mikhail Pletnev, to sing "Gate", the theme song for the documentary movie with the same name, Gate.

[14][15] Her eleventh single entitled "Miss You" was released on September 3, 2008[16] and was used as the theme song for Ito En Vitamin Fruit.

[19] Ito was featured in the 6/4 edition of the magazine, Oricon Style, as the fifth-most suited for bridal wear.

[22] Sony Music Japan created an official website for Christine and a blog.

[23][24] Ito collaborated with hip-pop/reggae duo Spontania for their single "Ima Demo Zutto" (今でもずっと, lit.

[25] Ito's thirteenth single "Trust You", became the fourth ending theme song for the anime Mobile Suit Gundam 00 Second Season.

"I Still Miss You"), which was the answer song to Spontania's "Ima Demo Zutto", was released online through ringtone sites.

[29] On 9 September, the website Spanspo mentioned that the drama named Ougon no Buta would feature a theme song sung by Yuna.

[30] Two weeks later Sony's Music Shop confirmed the theme song would be released as a new single named "Mamotte Agetai".

"LIVE-BEYOND" 2019 http://gundam40th.net/live_beyond/] of the "Mobile Suit Gundam" series TV anime broadcast.

Yuna Ito was in charge of the ending theme for the TV anime "Mobile Suit Gundam 00".