It's quite interesting to see an incest VN with just two female LIs throughout the entire story. The relationship between the twins feels like something straight out of a Literotica story, and I personally love it. But have you thought about how you're going to keep things fresh with just three characters? Stories like this tend to become repetitive quickly if there's no conflict, drama, or maybe additional characters. Looking forward to seeing how this pans out — all the best.