Because the dev has said in one comment conflicting information.
I thought the bad ending would happen if you take the friendship route. But as it is, as they said in the post. And only happens if you reject, basically dismissing them. I don't have any problems with it.
Regardless if it would be like I thought, that rejecting and friendship leads to the bad end. You would be forced to chose the option to avoid it. (If one wants to avoid it.) Even so one might maybe not like the fetishes present.
But glad that this isn't the case.


