Briefly about Our War that Ends the World, or Perhaps the Crusade that Starts it Anew manga:
The Empire, a nation of advanced machinery and science. The Nebulis Royal Household Agency, a land feared as “the country of witches.” In the midst of the long, endless war, between the two, the boy and the girl meet.
The ice witch revered as the strongest: Princess Aliceliese
The young swordsman who is among the Empire’s greatest forces: Iska
The two meet as enemies at war.
However, just as the boy is enchanted to the girl’s beauty and nobility, the girl is attracted to the boy’s strength and way of life.
Cooperation is impossible, and there is no path forward except through the other. And yet…