Aiki

Aiki is a 2002 Japanese film about a martial artist in a wheelchair, directed and written by Daisuke Tengan. It is loosely based on the life of a Danish practitioner of the Roppokai branch of Daitō-ryū Aiki-jūjutsu, Ole Kingston Jensen, who started training in Daitō-ryū after he was handicapped in an accident and now is the highest ranking non-Japanese member of the Roppokai.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.