Ultraman Mebius S1 E16 - A Sword Master From Space Ultraman Mebius

A duel between aliens takes place on Oshima's Comet. The intense fighting causes the comet to enter a trajectory headed for Earth, and GUYS prepare to intercept. Amidst the confusion, the duel's winner, Space Swordsman Zamsher, reveals to Mirai his reason for coming to Earth. It is to challenge Tsurugi to a duel!