Gintama

In an era where aliens have invaded and taken over feudal Tokyo, an unemployed samurai finds work however he can.

Gintama is a 2006 animation sci-fi movie, starring Kazuya Nakai, Tomokazu Sugita, Rie Kugimiya. It holds an IMDb rating of 8.7/10 from 21,353 votes and runs 25m.