Kosen Judo is the branch of Judo that focuses on ground grappling, which in Judo are referred to as Ne-waza.
Kosen Judo is an abbreviation of “kōtō senmon gakkō.” This literally translates to “Places of Higher Learning.”
The first Kosen Judo matches were held in 1898, and the first Kosen Judo tournament was held in 1914.