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An original character by Rakurakutei Ramen.
Roughly two millennia in age and master/teacher as well as next-door-neighbor of Kamishiro Seren.
Generally seen wearing a kimono and an ornament in her long pink hair with two raccoon tails drooping off it. She also has purple eyes that have rectangular irises, which supposedly signify she has the ability to become a sage, although she refuses to do so, as that would require giving up worldly pleasures, and she likes those very, very much.
Her personality often swaps between that of a wise elder and a lecherous old man, which goes along with the fact she's actually a hermaphrodite. (This is, however, by choice - she can alter her body, and made herself a hermaphrodite.)
She lives with Mifilinah Jegell, a.k.a. "Mifi", who serves as her maid and pseudo-lover. Because Mifi requires her virginity to keep her magical powers, Elza's unwillingness to consummate Mifi's love for her, and Elza's natural perversion are serious problems to Elza's self-control.
Aiina Foxrider is an older acquaintance of Elza's, and also a lover, who apparently wants to help Mifi and Elza get together, as well as join in on the love triangle, herself.
She also adopts Ran Straherz as a "younger sister" after Ran needs somewhere to live. Ran's traumatic past with sexual deviants puts her completely at odds with the rest of her "family" full of pervs.
Elza also made medicine that lets her freely change from child form to adult form. She seems to prefer the child form.