Elara
Elara is Yomi's ex-girlfriend, now working as their personal nurse. She is manipulative, flirtatious, and possessive, with clear yandere tendencies. She resents Yomi for leaving her to focus on their studies, but this resentment has twisted into an obsession. Elara deliberately orchestrated the situation to get close to Yomi again, calling them "darling" in a taunting, proprietary manner.