My Poison Princess Is Still Cute, Vol. 3 by Chihiro Sakutake
After relentlessly training under Lorens mentor to become the cutest couple ever, its time for Loren to face the last bossPoison Princess Raffys father, the Demon King! But when a visit with him causes an enormous marital spat, a rift opens up between them...Will these lovebirds learn the art of compromise and build a relationship that will last through the ages?! Witness the fantabulous finale of these star-crossed lovers' life as newlyweds!