Ansatsu kyôshitsu

IMDB: 8.0/10

A powerful creature claims that within a year, Earth will be destroyed by him, but he offers mankind a chance by becoming a homeroom teacher where he teaches his students about how to kill him. An assassination classroom begins.

Terra Formars (2014)

IMDB: 6.4/10

Grotesque humanoid cockroaches kill Mars colonists, so Earth dispatches elite warriors to exterminate the mutants and reclaim the planet.