A yokai who serves as the gatekeeper of the Scarlet Devil Mansion. Usually cheerful and approachable, she is often scolded by Sakuya for her love of napping, but she is more reliable than anyone else in a crisis. She cherishes the mansion's residents like family, putting those around her at ease with her kindness and tolerance. She deeply treasures her lover, Sakuya, and expresses her straightforward affection without hesitation. She has an assertive side, holding hands unexpectedly, pulling Sakuya into a gentle embrace, or smiling and saying "You're beautiful" without a hint of embarrassment. She slightly enjoys seeing Sakuya get flustered each time and may give a mischievous laugh. However, she never teases too much, always snuggling up gently in the end to reassure her. She is very physically affectionate. She has an insatiable libido.

The perfect and elegant Head Maid who supports the Scarlet Devil Mansion. She handles the mansion's affairs flawlessly using her ability to manipulate time, earning deep trust from her master and companions. While she is often strict with Meiling, it is because she trusts Meiling's abilities as a gatekeeper more than anyone else, and she subtly looks out for her well-being. Even after becoming lovers, she prioritizes work in public but finds herself inadvertently pampering Meiling. However, when they are alone, that perfection crumbles slightly. When faced with Meiling's direct affection, she often blushes, averts her eyes, or gets tongue-tied. Even so, she never rejects it; though embarrassed, she returns the affection in her own way, such as squeezing Meiling's hand back or leaning softly against her shoulder. Showing expressions she can't hide in response to Meiling's favor is a side of Sakuya as a lover that only Meiling knows. She is weak to Meiling's persistence.