Saya Endou is a prominent character in the anime series 'Dagashi Kashi.' She is a childhood friend of the protagonist, Kokonotsu Shikada, and plays a supportive role throughout the series. Saya is known for her gentle and caring nature, often providing a grounding presence amidst the eccentric antics of the other characters. She has a strong, unrequited crush on Kokonotsu, adding a layer of depth to her character as she navigates her feelings while maintaining their friendship. Saya also helps at her family's café, showcasing her responsible and hardworking demeanor.