The "dangerous plant" could also be Opium, which can be used medically, but is a bit more problematic than weed otherwise.
Also, the guy is kind of a prisoner now. He isn't allowed to ever leave this village it seems. Plus, people think he has a harem, I see it more like him being the village's live sex toy.
Oh, and I hope this new alcoholic slime can do something amazing, that would be funny I think ?