"The only human who lives in the house where devils dwell and leader of the maids. A mysterious girl who works in a place that normal humans don't dare approach. Nobody had ever seen her before she started working at the mansion."

— Hieda no Akyuu

Izayoi Sakuya is the chief head maid and sole human resident of the Scarlet Devil Mansion in the Touhou Project series.

"Time, flow once more."

- Izayoi Sakuya

Full Name: Sakuya Izayoi (十六夜 咲夜) (Given to her by Remilia Scarlet)

Species: Human (implied to have decelerated aging)

Affiliation: The Scarlet Devil Mansion (SDM)

Occupation: Chief Maid, Head of Household Operations, Secondary Incident Resolver