As champion he participated in Fire Festival 2007 and once again fared poorly, gaining three points. On November 13, Sekimoto lost the NWA United National Heavyweight Championship to Yoshihito Sasaki.
As the champion, Sekimoto participated in the Fire Festival 2007 but failed to excel, scoring only three points. This setback occurred on November 13 when Sekimoto was defeated by Yoshihito Sasaki for the NWA United National Heavyweight Championship.