Otherworldly Beasts Suffer Ferocity

A standard straight man woke up and came to the orc planet that he had only read about in novels but never seen with his own eyes. The problem is, the world view of this orc planet seems a bit strange... Other humans come to the world of orcs as females, to be protected, loved, and taken care of. Why is it that he is a female when he comes, but he is a female to be an attacker?! Wait, why do these ferocious-looking beasts work as horse-harnessers during the day, but at night they shed their human skin and turn into big orcs to be "fed"! ! ! It's true that he is a straight man, but at the moment, beasts are being brutalized. As a poor human being caught by a domineering, gentle and damn strong beast, what should he do... By accident, uh, I heard that the beast was pregnant? Conception: