Ultraman Ginga: S1 E10 - The Jet Black Ultraman Brothers
A jet-black Ultraman appears before Ultraman Ginga and attacks Ginga savagely while changing into the form of Ultra Seven. Ginga falls, and Hikaru loses consciousness. Monsters begin to show up and swarm into the Furuhoshi Primary School. Can the combined forces of Misuzu, Kenta and Chigusa stop them?