Anime; the one thing that gets us closer to each other and brings us together.
All spoilers must be tagged!
So you can learn Tao by hand-holding, the screwing part is completely unnecessary.
It didn't look like those "I have reason!" monsters were so worried about Mei for the sake of other monsters, they were totally planning to use her for themselves.
You can also learn Tao by eating humans that turned into plant (Ten) but I suppose that would be a crime in their society.
The way I understood it you become more powerful by screwing. Hand holding was just to help him feel tao
Yeah that's what I had understand too, but his comment does raise the question if that's actually true ?
I wonder if Aza will start turning into a tree person like Houko. Those vines make me think he will be heading that route. Though they are far longer lived than normal people, so that does not seem to a now problem. Specially not the kind of thing Aza would worry about.