Сосаку Юбива

Year 1, class A at Yubiwa Academy Middle School. Also known as "Sosaku the Artiste." Mayumi calls him "Child Genius." He is the heir to the Yubiwa Foundation, the parent organization of the Yubiwa Academy. He is the de facto president of the Yubiwa Foundation. A child prodigy with both financial and artistic talents. He is a member of the Detective Boys' art team. He is expressionless and of few words, but only Manabu can read his thoughts. Usually only speaks twice in each book.