A Villain's Dilemma: How to Not Meddle too Much with a Clumsy Holy Knight's Life summary:
A clumsy knight and a magician who struggles to understand his own feelings. The story of how two arch-enemies end up closer than they ever thought they would be. Spin-off of「Maou no Ore ga Dorei Elf wo Yome ni Shitanda ga, Dou Medereba ii?」, which follows the daily life of Barbaros on his job of protecting the Captain of the Holy Knights, Chastel Lillqvist.