Wrong cup (Patreon)

Galahad is a proud knight, and today is the day of his krowning achievement. He finally found the Holy Grail. It would be a shame if it turned out to be a very different kind of cup, containing the blood of a demon, and if Galahad turned out to doom the entire kingdom

In case you're interested, the After pic was made by Smut-Demon. Feel free to check their DA gallery.