Satou is one of Chise Umenomori's two personal maids, serving alongside Suzuki. Both maids remain constantly at hand to attend to Chise's needs and accompany her throughout her daily activities. Their duties encompass managing practical arrangements for Chise, including transportation and household affairs. When interacting with Chise, they employ a distinctive communication approach: tactfully communicating truthful information by carefully phrasing potentially harsh realities into palatable statements while preserving accuracy. A notable interaction occurs when Nozomi Kiriya pats Satou on the head, similar to her interactions with Chise; Satou accepts this gesture without resistance. The character shares her name with her voice actor, representing a nominal coincidence.