The only other girl in the Kazalumu Sanctuary. Elin's best friend, she is cheerful and always showed her support to Erin.

She has some feelings for Kashugan.

She had been one of the first two alongside Tomura to take Kazalumu Oath (Episode 23). Yuyan, along with all the other students in Elin's class leaves Kazalumu upon graduation in tears, leaving Erin behind, who would be the teacher at the Kazalumu Sanctuary (Episode 36).

She and Kashugan are shown to have a family together in episodes 49 and 50.

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