Rio Nishina

A store employee at the supermarket Yukichi often goes to. A student. Due to too many shifts, they are misunderstood as a full-timer by other part-timers. A cousin of Yuri, but they do not know that Saku is Yuri's senior. Initially thought Yukichi, who came shopping, was a pervert in a costume and was worried about receiving complaints from other customers. However, Yukichi changed their mind after helping out during a dispute with their ex-boyfriend. They have romantic feelings for Saku, who helped by throwing the ex-boyfriend.