Judo BoyJudo Boy.

Kurenai Sanshirō (Japanese: 紅三四郎; lit. "Scarlet Sanshiro"), known outside Japan as Judo Boy, is a Japanese anime television series created by Tatsuo Yoshida and his brother Ippei Kuri loosely based on the manga Judo Boy (Japanese: ジュードー・ボーイ, Hepburn: Jūdō Bōi) written by Yutaka Arai and Kuri and illustrated by Yoshida. The series aired on Fuji TV from April 2, 1969, to September 24, 1969, totaling 26 episodes.