In Japan, more and more people are riding bicycles to go shopping, to commute, for exercise, and for leisure. Gunsmiths pioneered bicycle-making techniques in Japan. In the late 19th century, with the samurai era at an end, their profession disappeared. Special techniques they used to make gun barrels strong were also suited to building sturdy bicycle frames. Keirin bicycle racing from Japan became an Olympic event. Behind its rise was a racer of incredible drive who took on the world's best cyclists. Manufacturers churn out a wide variety of bicycles, but at least one rider has dedicated his life to customizing his bicycle with attention-drawing decorations. On this edition of BEGIN Japanology, our theme is bicycles. We examine their evolution in Japan and look at the unique bicycle culture that has emerged.