Rio Sakaki

An old friend of Momo from their elementary school days, this young girl views him with immense affection, often calling him her "angel." Due to her father's frequent late-night work shifts, she manages most of the household responsibilities and cooking alone. Along with Mizuyama, she holds the heavy burden of knowing the truth regarding Kurihara’s unsettling stalking behavior, making her one of the few characters aware of the brewing danger.