He is the heir to the longstanding fireworks store "Asano Fireworks Industry" in Nagasaki, which has been passed down through generations. Due to an eye disease, he is unable to distinguish the color red. He aspires to become a fireworks artisan and apprentice under his father and mentor, Yohei, after graduating from high school. However, he gradually realizes his lack of talent and is eventually disowned by Yohei.

(Source: Japanese = Wikipedia || Translation = MyDramaList)