Taizō Hakuto attends Taishou High School as Haruaki Yachi's classmate and closest friend. He regularly serves as judge, alongside Kana Miyama, in cooking contests between Haruaki and class representative Kirika Ueno, consistently awarding victory to Haruaki. Discovering that Haruaki lives with multiple young women, including Fear and Konoha, sparks significant envy in Taizō, stemming partly from his romantic interest in Konoha. Taizō develops elaborate theories about strange occurrences at school, often investigating them with Kana Miyama. Their inquiries typically uncover that Haruaki and his companions already understand the situations they explore.