Thank you so much laravr!: D
You're honestly the first person that seems to like the twins hahahha, most people hate them.
According to the document, they harmed animals so they wouldn't deserve a happy ending. However, there's a chance that those documents are not entirely true (also, that was a statement by their parents. Maybe the parents were lying and the twins never hurt animals).
If I make a third game, they definitely need to come back (maybe not as an enemy but as a npc important to the story)
Thank you so much for your support!