Maou ga Inaka ni Totsuidara  

魔王が田舎に嫁いだら, If a Demon Lord Were to Get Married in the Countryside

An elementary school teacher residing in the countryside is unexpectedly visited by a young woman claiming to be the Demon Lord. Despite their initial shock, they eventually agree to marry and embark on their new life together in rural bliss. This romantic comedy follows their journey as they navigate their love story amidst their quaint countryside surroundings.