Shiro Koshinaka
On June 26, 2019, Choshu teamed with Tomohiro Ishii and Shiro Koshinaka in a 6-man tag against Tatsumi Fujinami, Keiji Mutoh, and Togi Makabe. Fujinami's team won when Makabe pinned Choshu. In the post-match, Choshu officially announced his retirement from pro-wrestling.