Board Thread:Questions and Answers/@comment-30160565-20180606030230/@comment-30700719-20180606123237

Well, if I remember correctly from the lore, monsters aren't all that fertile. Remember the Tentacle Forest? The Treasured Child Tree in the middle is what keeps monster girls and their husbands trying.

"By nature, it is extremely difficult for monster human couples to have children compared with human couples. Some monsters have lifespans that last centuries, or even millennia, and if they're unlucky, they won't be able to have children even after years, decades, or even centuries of having sex a two-digit number of times every day. Because of this, when monsters are not blessed with children, they decide to challenge a tentacle forest again and again, seeking a crystallization of the love they share with their husband."