Gintama

The Edo period in a parallel universe. The Amanto, alien invaders, have conquered the Japanese Empire. Since then they have ruled people's everyday lives with their superior technology and forced the samurai underground. Any form of resistance is brutally suppressed. Gintoki Sakata (Shun Oguri), a former samurai warrior, still mourns his old life and carries a wooden katana out of defiance. As a day laborer and good-for-nothing, he is wandering through the country, together with the waiter Shimura and the alien Kagura. After Katsura, a childhood friend and former combat companion of Sakata, is killed by a mysterious swordsman, the friends go in search of the unknown murderer. A fast-paced adventure begins.