After Anima comes to the rescue of the commander of the Raiten Knights’ First Corps, she asks for his help slaying a powerful beast terrorizing the nation. But, always one to put his family first, Anima decides to turn this quest into a belated honeymoon! The kids are thrilled to go on their first trip, and Anima can’t wait for the opportunity to get closer with his new family... But what will the detestable Demon Lord do when discovers the beast’s true form?

Wintertime brings new experiences for Anima and his precious family, including some fun in the snow. But when Myuke and Bram get into a fight, it’s up to Anima to step in and help them make up! Not that the Demon Lord isn’t already busy, of course. When he’s not mediating between the girls, he’s running around helping his pregnant wife Luina prepare for the newest addition to their family. Fortunately, the kindhearted townspeople are happy to lend a hand!

Life has been blissful for Anima and his tight-knit family, which now includes a daughter they adopted during their trip together. Between celebrating Marie’s birthday, going on a date with Luina, and getting ready for a costume festival, it’s been one fun thing after another for the Demon Lord. But when something strange happens to Luina the day of the festival, Anima doesn’t hesitate to use the full extent of his powers to save her!

"Your happiness is my happiness, Luina."Anima has spent his days in pure bliss with his lovely wife and adorable, loving step-daughters. One day, he finds the leader of the Raiten Knights' First Corps collapsed on the ground. After nursing her back to health, she informs Anima of a terrible beast terrorizing the country.The beast she speaks of is so powerful could threaten the peaceful life of his family, so Anima decides to head out and defeat the menace. Not only that, but he's even able to use the opportunity to go on a honeymoon with his loving wife and children, killing two birds with one stone. The girls love the idea of their first family trip, on which their bonds would only deepen.However, once Anima arrives on the battlefield, he finds something he could never have anticipated! Follow the strongest Demon Lord in all the land as he enjoys the bliss of married life in this brand new volume of "Why Shouldn't a Detestable Demon Lord Fall in Love?!"

Anima is an immensely powerful Demon Lord, so he spends his days living in solitude...right up until he’s summoned to another world out of the blue! The person who summons him is Luina, a poor girl who has her hands full running an orphanage. Anima quickly falls for her and, in a first for him, learns what it’s like to be surrounded by loved ones. With Luina by his side, the detestable Demon Lord now vows only to use his fearsome powers to protect his newfound family!

This is the story of a detestable Demon Lord and his wonderful new wife, a destitute damsel!Our Demon Lord, Anima, is the strongest in all the world, feared by the denizens of the realm. He's forced to spend his days in solitude until, completely out of the blue, he gets summoned to another world! The one who summons him is none other than Luina, an exceedingly poor girl who runs an orphanage. The two of them quickly fall in love, with Anima swearing to use his power to protect his newfound family!