Design of the Ku-8-II began in December 1941, and the glider was essentially a Kokusai Ki-59 with the engines and fuel tanks removed and a modified undercarriage.

[2] A Ku-8-II version that was produced in 1944 used a tubular steel frame structure and had a hinged nose that could be opened to the side to allow loading.

Also, its capacity was increased slightly to carry twenty troops.

They were used operationally in the Philippines, primarily to carry supplies.

Data from topsid.com:Kokusai Ku-8-II,[4] Japanese Aircraft of the Pacific War,[5] Fighting gliders of World War II[6]General characteristics Performance