I don't know the minimum stats, but I brought all 4 stats to max, equipped all the gear from the shop, and gave her some stat boost items before entering. I was able to do it without the steroids.
Came for the boobies, stayed for the story. This is easily one of the best H-VNs I've played. Intelligent writing, emotional attachment to the characters, and good world/lore building. There are some minor bugs here and there, but overall excellent work.
