Why Shouldn't a Detestable Demon Lord Fall in Love?! Volume 2

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?

[From J-Novel Club]