Rixia was originally called to Calvard to act as an assassin-for-hire by Heiyue. However the leading Arc-en-Ciel performer Ilya Platiere noticed Rixia's natural talents and roped her into performing for the troupe, causing Rixia to juggle her duties as the disguised assassin Yin and her acting job as the Princess of the Moon.
In Zero no Kiseki, Rixia discovers that someone had used the name "Yin" to sign a threatening letter to Ilya. Despite Ilya not paying much attention to the letter and calling it a prank, Rixia sprung to action In order to discover the identity of who impersonated "Yin". Deciding to kill two birds with one stone, Rixia visited the Special Support Section with an appeal directly to Lloyd to find the identity of the letter sender while simultaneously sending a digital message over the Orbal Net to the S.S.S. under the name "Yin" to meet at Stargazers' Tower. In doing so, Rixia (while in disguise as Yin) was able to collaborate investigative data with the S.S.S. and get a clear picture of the strengths and limitations of the newly formed police group.
When the S.S.S. were rushing to Ursula to confront Joachim and rescue the hospital workers, Lloyd directly appeals to the disguised Rixia to temporarily team up, stating that they could achieve both of their goals while watching each other's backs. Rixia, surprised that Lloyd would even propose teaming up with a known assassin, agrees with Lloyd and temporarily joins the team to discover more of the truth behind the link between Gnosis and Revache.
A black sword for those who live in the darkness.
|—||Divertissement: initial gear|
|[STR+1165/RNG+2/Crit+5%/Causes Faint (5%)]|
A large sword that appears in Eastern legend. Repels evil.
|—||Chest: Geofront E|
|True Dragon Claws|
|[Attack (Set) - Area (L) - Suction]|
Draws in foes, then slashes. Attacks twice.
|True Falling Moon|
|[Attack (Set) - Line (M) - Faint (50%)]|
Throws sword like a boomerang. Unbalance+20%.
|[Support - Self - Stealth/SPD+50% (2 turns)]|
Disappears from sight in a group of silvery butterflies.
|True Paraselene Dance|
|[Attack - All]|
Binds foes with claws and lunar light.