She always thinks that she doesn't need others, so she led a solitary life, and she is happy with it. And that is why she decided to learn the Chanting Skills (Meieishiki), the skills on how to materialize one's own "heart" and summon it.

She believes if she learns the skill, she would become closer with him..., and to tell him something she wanted to say for so long.

Keinez (red) - Ruguz (blue) - Surisuz (yellow) - Beorc (green) - Arzus (white) as the basic colours, and through a catalyst on same colour with the one she wants to summon, she has to glorify and then sing its name; they're the Chanting Skills' basic way to summon own "heart". At a vocational school where these things are being taught, Kluele studies them, and a transfer student Neight, whose specialty is the unorthodox Night Colour chanting skill, attracts her interest. Although Xins, a well known Rainbow User, is also searching for a Night Colour user...