Ever wondered how will Doomguy or John lives in the world full of supernatural beings? Add to that, we'll throw in shameless fanservice and brutal finishers that John's always do when beating demons apart with his bare hands. And will he able to keep his already-broken sanity in check as he was exposed to more strange and weird things happening in the future?

What if the main character was transported in to the city, instead of the forest like most crossovers do? And not found by Team RWBY? Enter Caesar Lanius now Leseath as he/she tries to live his/her best to a world full of man-eating beasts and racial terrorist group that terrorizes humans in particular. Rated M for Fallout and lots of gore.