Teenage Mutant Ninja Turtles (2003) (2003)

S4E13 Samurai Tourist

Usagi and Gen arrive in New York for a reunion with the Turtles. Captivated by the vibrant cityscape, Gen loses track of Usagi and ventures off alone. Meanwhile, the bustling metropolis presents its own risks, as an assassin from Usagi's realm has tracked them down, with Leonardo as the intended victim.