Kokonotsu Shikada is the son of a dagashi snack shop owner. Although he wants to become a manga artist, his father, Yo, wants him to take over the family business. One day, a girl named Hotaru Shidare shows up at the shop and challenges Kokonotsu.

Hotaru challenges Kokonotsu to compete in a blind fugashi taste test. She also helps him to run back to Café Endo when she realizes that he forgot something very important to him at the café.

Hotaru visits Shikada Dagashi after business hours to conduct a covert exchange with Kokonotsu’s father Yo. Later, she lets Kokonotsu and To in on her secret moneymaking technique.