(Gender transformation) (Girl love) (One man, multiple women) (Alternate World War II)
Science x Witch ✓
In 1939, the Germanian Empire launched a massive invasion of its neighboring countries. The nations around it hastily entered a state of war.
In this era, when science flourished and magic had been forgotten, the Principality of Machino was the only place with a witch left.
"Ha, what? You're telling me I'm the last witch?"
"Wait, a witch's daily training is jumping out of an airplane?"
"Haa... Even after I transmigrated, can't I get a decent night's sleep?"
"Hold on, what do you mean becoming a witch means I can't inherit the family business? I still want to lie flat!!!"
"Forget it. Let's not bother with cheat powers. Cuddling is more important~"