Koide was born in what is now the
Shinsaibashi area of
Chūō-ku Osaka. Interested in art from childhood, he studied
Nihonga in elementary and middle school. In 1907, he applied to the western arts department of
Tokyo School of Fine Art, but failed his entrance examinations, and was accepted into the Nihonga department instead. Although he was able to study under famed
Nihonga painter
Shimomura Kanzan, he was still drawn to
oil painting. After graduating in 1914 he returned to Osaka and continued to paint and entered a
yōga-style portrait group titled "N-Family" into the 1919 6th
Nikakai (Second Division Society) Exhibition, where he won the Chōgyū Prize. This painting is now recognized by the
Agency of Cultural Affairs of the Japanese government as an
Important Cultural Properties of Japan. In the
Nikakai exhibition of 1920 his portrait of the "Young Girl Omme" received the Nika Prize. He received numerous commissions following these successes, and experimented with a variety of media, including
painting on glass. From 1921–1922, he travelled to
France, and established his
atelier in Osaka in 1924. (This studio is now preserved at the Ashiya City Art Museum). In his later years, Koide was especially known for his nudes. He died in
Ashiya, Hyōgo in 1931. ==Noted Works==