Ultraman S36E17 - Demon Slicing Meteor Sword

The alien that appeared before Yuma and Shu is called Zangill, the space samurai. According to him, the "infernal dark shogun" kaiju from another dimension is sending kaiju into this world!?

And just as he said, a kaiju army appears in the city! When Yuma and Zangill go against the kaiju, Ultraman Arc's sword strikes!