"Dagashi Kashi 2" continues the lighthearted and comedic exploration of Japan's traditional snack culture, set in the rural town where the Shikada family runs a small dagashi (cheap sweets and snacks) shop. The protagonist, Kokonotsu Shikada, is an aspiring manga artist who reluctantly helps his eccentric father, Yo Shikada, manage the store. Yo is obsessed with dagashi and dreams of passing the shop to his son, but Kokonotsu remains torn between his passion for manga and his familial responsibilities.

The series introduces Hotaru Shidare, a quirky and energetic girl from the prominent Shidare family, who owns a major dagashi company. Hotaru arrives in town with the goal of convincing Yo to join her family's corporation. However, her fascination with Yo's encyclopedic knowledge of dagashi and her growing attachment to the small-town shop complicate her mission. Hotaru's eccentric personality and boundless enthusiasm for dagashi often lead to humorous and chaotic situations, especially when paired with Kokonotsu's more reserved demeanor.

Throughout the series, the interactions between Kokonotsu, Hotaru, and their friends—such as Kokonotsu's childhood friend, Saya Endo, and the stoic yet kind-hearted Hajime Owari—drive the narrative. The show balances episodic humor with moments of character development, often centering on the unique charm of various dagashi and their cultural significance. The second season maintains the same tone as the first, with a focus on comedy, lighthearted drama, and the occasional heartfelt moment, all while celebrating the nostalgic appeal of traditional Japanese snacks. The dynamics between the characters, particularly Kokonotsu's internal conflict and Hotaru's unwavering passion, remain central to the story.