Laios and the Minotaurs (Patreon)

After getting lost in the dungeon, Laios wonders alone for a long while. He battles monsters, eats them, gets his clothing stolen by creatures in the night and is left to wander in the nude. Luckily, Three Minotaur brothers find him and take him back to their hideout and help him keep warm before sending him back to his party, changed forever.

I like to imagine the Minotaurs used magic to make Laios insides have bara anatomy. No adventurers were permanently harmed in the process. They just left him with an insatiable need for Minotaur meat for the rest of his life.