INTERLOPER (series)

As the inhabitants of the Trench find themselves being replaced by Interlopers, interdimensional pests with the ability to copy humans, Isaac, an Exterminator working for Pecos Pest Professionals, becomes increasingly obsessed with exterminating the Interloper who destroyed his life.

Dystopian Interdimensional Mystery Occult Psychological Western Teenagers (13-18)
Adults (18+)
action comedy manga seinen