An evil organization invades and destroys everything in its path. The brains of the brutal operation is the king’s right-hand man, an evil lieutenant named Mira. Everything changes when a magical girl named Byakuya Mimori tries to stop the evil group in their tracks. When Mira confronts her, he knows it’s love at first sight. What will become of Mira and Byakuya, stuck between orders and love? 
 
(Source: Crunchyroll)

[Wiki (jp)](https://ja.wikipedia.org/wiki/土師孝也)

She's a magical girl, sworn to fight for peace, love, and justice. He's a lieutenant, born into a military family that serves an evil empire. And yet, it was love at first sight...From Inu x Boku S.S. creator Cocoa Fujiwara comes a four-panel comic about hostile enemies who won't kill (and love) each other!
 
(Source: Yen Press)
 
Notes: 
- Chapter count includes 2 extra chapters. 
- The manga was cancelled due to the mangaka passing away.

Betelgeuse