What are the dark sides of monster girls and their seemingly unending 'love' that no one wants to say?
I'll start. For me, broken families caused by monsterization. How?
When mommy unexpectedly turns into a Succubus and realizes she doesn't actually love her husband but is just staying with him out of convenience, and she for the past 2 months has been fucking the neighbor, daddy and the children suddenly find themselves without mommy.
After all, this universe promotes true love, does it not?