(HIATUS) What if Tessia and Cecilia had actually separated into separate bodies upon Sylvie's usage of an ancient art to grant Arthur an Asuran body? Tessia absorbed a portion of the aether released by Arthur's bond, and gained a form rather similar to what Arthur, or much rather Grey, obtains. TBATE is not owned by me, I'm just a fan of the series and wanted to do an idea I haven't seen mentioned.