Quetzalcoatl

Quetzalcoatl (ケツァルコアトル, Ketsarukoatoru) is an Aztec dragon goddess and another friend of Tohru, who is aligned with neither faction, and lost her divine status centuries ago after getting drunk and causing a scandal involving her younger sister, much like the Quetzalcoatl of the original mythology. She is often referred to as Lucoa (from "lcoa" of the deity's name as adapted to the Japanese syllabary) and Tohru sees her as a source of wisdom but will sometimes casually reference the events in her past, much to Lucoa's embarrassment. She lives with Shouta after she interrupted his summoning spell to prevent him from summoning a dangerous demon, causing him to mistakenly believe she is a succubus. Lucoa appears in her human form as a tall, well-endowed woman with striking heterochromia. She often becomes overly affectionate with Shouta, scaring him, and having others mark her as a pervert. She tends to wear tight-fitting clothing that shows a lot of skin, and a running gag involves her showing up to a public place only to be dragged away by a staff member for being dressed inappropriately.