Isami Kodaka
The fourth time was on April 5, 2010 where Kasai competed in a Barbwire Treaty Death Match that pitted Team CZW (Kasai, DJ Hyde and Nick Gage) against Team BJW (Jaki Numazawa, Isami Kodaka and Masashi Takeda) in which a razor blade board was used in several bumps. On June 21, 2010 Kasai competed against the Necro Butcher in a Hardcore match for the Freedoms promotion; the razor blade board came into play mid way through the match.