Mei Ayazuki, a high school student with shoulder-length dark brown hair and striking yellowish-amber eyes, navigates two worlds through distinct appearances: she sports a modern uniform with headphones in her original timeline, while her time-displaced self dons a cream-and-blue patterned kimono top paired with a red hakama adorned with floral motifs, completed by a vibrant red hair bow. Born into an antique-shop family, her tamayori heritage grants the ability to converse with spirits tethered to aged objects—a talent that isolates her socially yet proves vital when she accidentally slips into the Meiji era during a magic show under a crimson moon.

Stranded with fragmented memories, Mei adapts to historical Japan, oscillating between disbelief and determination as she collaborates with figures like Ougai Mori and Shunsou Hishida. Her spirit-mediated skills resolve supernatural crises, from recapturing escaped painting entities to aiding paranormal investigations, forging bonds that complicate her longing to return home. Media adaptations diverge subtly: she awakens in a church (live-action) versus a park (anime/game), while narrative branches in the visual novel shape relationships, from posing as Ougai’s fiancée to influencing Shunsou’s artistic journey.

Though friendly and resilient, Mei’s naivety about Meiji customs and occasional clumsiness contrast with her growing resolve. Her hearty appetite—particularly for roast beef—adds levity to her existential tug-of-war between eras, as unresolved possibilities linger: permanence in the past, a return with preserved memories, or solitary departure after reclaiming her full identity.