Kaien Ōsugi is a Kick Boxing user who compete's in the DofD tournament. He is a member of the team Hayato Fūrinji battles while the latter disguises himself as Garyū X. Kaien is easily defeated by Hayato's kicks which prevent him from standing back up and continuing to fight, all the while making it appear as though Hayato was not moving at all.

It could be deduced from his team that he teamed up with or studied under Gorobee Rofusagi at some point prior to the DofD.

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.