[Machine Translation] In Yasushi Inoue's autobiographical novel "Kita no Umi" (The Sea of the North), the judo master Kosaka Mitsunosuke, known as "Ooteari" (the "big ceiling"), continues to teach kosen judo for 65 years, developing and refining numerous newaza techniques in this collection of rare footage from his life. This film brings back to life the refined techniques of this man who embodied the essence of kosen judo.