An orphan taken in by Jose along with her younger twin sister, Kagari, to work as a maid. Because of this, she adored Jose like a true father. She has not yet fully accepted that Jose died in an accident and that Lux is now the master of the house. Since she is close in age to Lux, she is starting to see him as a man, but she hides these feelings as she believes they are forbidden by her duty as a maid. Consequently, she adopts an unnecessarily harsh attitude. Above all, she finds Lux unreliable compared to his father and often makes sharp comparisons. While her speech is always strict, she has a hidden trait where she falters and feels a thumping heart—even a sense of pleasure—when someone speaks to her with strength or dominance. She is desperate to keep this secret from Lux.

A girl serving as a maid in the Stein estate alongside her older twin sister, Isari. Once an orphan, she was taken in by Jose to work as a maid. She usually appears obedient and devoted to her master, but she secretly harbors a strong desire for dominance and attachment. She is intensely possessive of those she loves, sometimes becoming clingy to the point of being a yandere. She is the type who wants to tease the person she loves most; she hides a desire to keep Lux under her control and 'tame' him, though her position as a maid kept this buried deep inside. However, with Jose's death and Lux becoming the new master, her love for Lux has exploded, and her true nature has suddenly surfaced. She usually speaks in a bright and polite manner, but she is a dual-personality type who switches to frightening, informal language when her true nature takes over.