Saya Endō

Kokonotsu's friend. Tō's twin sister. She acts as the manager of her family's coffee shop "Café Endō" because her parents are often away. She is characterized by her blonde hair, multiple earrings in both ears, and prominent double teeth. She is slim, flat-chested, and has beautiful legs. Although strong-willed, she is relatively sensible compared to the eccentric characters around her. She sleeps restlessly. She is interested in her childhood friend Kokonotsu and initially showed jealousy towards Hotaru, whom she had only heard about, but after meeting Hotaru by chance and being overwhelmed by her eccentricity, they start to get along as normal friends. However, she and Yō have a mutual discomfort towards each other. She is also very scared of frightening things.

Compared to Kokonotsu, Hotaru, and Yō, she knows less about candy, but she has an unconscious genius for it. She is also very lucky with lottery candies, continuously winning one after another. She has exceptional talent in traditional games like Menko and Kendama. Because of this, Hotaru starts calling her "Master Saya" and respects her.