|First Appearance||Ciel Nosurge: Ushinawareta Hoshi e Sasagu Uta|
|English Voice Actor||Kira Buckland|
|Japanese Voice Actor||Maaya Uchida|
Nay is a character in Ciel Nosurge and a returning character in Ar Nosurge. She was the original Tenmon Empress Candidate, but lost her position and original body when Fractal removed her soul for the transmigration to give the body to the current Ion on Revelt's orders, and her soul was put into the body of Sharl. She meets Ion, in hopes of getting revenge and reclaim her original body, but eventually becomes great friends with her, and becomes a part of The Seven, eventually becoming the empress of what is left of the land.
- Neptlude (Class::NEPTLUDE=>extends.TX_CLUSTERS/.) : This songs original use is be the activator song of Neptron however that was a ruse, and the true purpose is to exchange the souls of REON and the diver. Nay also sang it with different feelings to trap REON and free Ion.
- Code Ethes Wei (Class::ETHES_WEI_extends.COMMUNI_SAT/.) : Used to send a wave, or signal to operate one of the most important satellites of Tenmon, named the Master Registrar, which contains top secret classified information.
- zu-fao jen-din; : This song serves to execute a Sixth Axis Movement, movement through the possibility and Qualia Axis, in order to change the current status of the world.
- Hidra Heteromycin : A song only capable of being sung by Nay, who bears the Imperial Vocal Cords; this song is is capable of transmitting feelings to all the Sharl, and controlling them. Nay sung this song in order to transfer feelings of self-destruction throughout them all to save the humans on the Soreil, if Ion hadn't intervened, Nay could've well died from this task as those feelings welled up a willingness to commit suicide.
- Class::DISTLLISTA; : Performs a Third Axis Movement (teleportation) to the planet Ar Ciel. While a teleportation of such tremendous distance was normally impossible, by taking advantage of the wormhole created by Ra Ciel Fuser in an unsuccessful attempt to migrate there 5000 years ago, Nay was able to sing it as the current bearer of the Imperial Vocal Cords to send Cass and Delta through the wormhole to the planet Ar Ciel.