Ch. 1: The Demon Lord is tricked by the humans and held captive, where the obsessed prince confesses his love
Ch. 2: The demon king save a slime while it's being attacked and the slime takes a human form to repay him with pleasure
Ch. 3: Holy Knight 2 enters the Demon Lord's castle to discover Holy Knight 1 has made the cute and friendly Demon Lord his wife
Ch. 4: A hero continues to challenge the Demon Lord as time passes, getting older each time and even eventually becoming blind
Maou Uke BL