doomguy of remnant (RWBY harem x OP male doomslayer OC)

after killing Olivia Pierce and killing the demons, doomguy thought he could return back to earth but before she died, Olivia had other plans for him and that was sending him to another world, a world where creatures of grimm roam in every direction and attack without warning but doomguy is very well prepared as he has all of his weapons he acquired back on Mars. as he was camping, he noticed 4 girls being attacked so he decided to help them. as thanks, the girls invite him to beacon academy where he removes his armor which reveals a very handsome young man in which most of the girls fall in love with him immediately. now he's growing his own harem.