beta
Im pretttyyyy sure they were upset, not because the dude was going to rape him, but because he was going to touch what's "theirs". Like another commenter said, I don't think they really even get the concept.
ALSO ALSO, I don't know that this dude came here to take his anger out on ewan, that may be part of it, but like the above statement, i think the idea was to make him "his", he wants to belong to ewan, and for ewan to belong to him. In a WAY, he's kind of right, he was supposed to be partnered with ewan.
Something people i think are overlooking, is that these aren't typical manga beastmen, they really are beasts here. They're fighting with the laws of the animal kingdom, not ours.
OBVIOUSLY that doesn't make it right or okay, but I don't think the manga is trying to convince you that it is.