This is a used item. I watched it about twice and then stored it in its case, so I think the disc condition is good. [Overview] This DVD is about KUDO of Daido Juku, and introduces advanced fighting techniques by fighters representing Daido Juku, including Hideki Ogawa, Takuichi Inagaki, Masayuki Teramoto, Kazuma Shimizu, and Takayuki Hirayasu, as well as basic groundwork techniques. It is a very valuable educational material for those interested in martial arts and combat sports.