Rio Nishina

Rio is a college student who also works shifts at a local supermarket, and she happens to be the cousin of Yuri Shibazaki, a junior acquaintance of Kourai. She was initially guarded toward Yukichi, who wore a mascot-like costume, but after being harassed by her ex-boyfriend and rescued by both Kourai and Yukichi, she developed feelings of admiration for Kourai. Known for her candid nature and sharp observational skills, she often delivers calm, pointed retorts at the store manager's intense obsession with cats.