"Toda Design Research Institute," founded in 1982 by designer Toda Koshirou, has been a creative hub for over 30 years. Toda Koshirou's iconic work, "あいうえおえほん - The Alphabet Picture Book," has charmed 800,000 children and earned the prestigious Good Design Award. The institute, guided by a commitment to creativity and craftsmanship, continuously produces innovative picture books and unique products, all rooted in a distinct approach from concept to distribution.

Toda Yasushi, inheriting his father's vision, contributes to the institute's creative journey. His work includes "The National Flag Picture Book" and the "Complete Edition: National Flag Picture Book." The institute's legacy is built on a dedication to inspiring and delighting people of all ages and backgrounds, transcending boundaries of generations and genres.