I, a Witch, Would Never Want to Carry a Magical Girl's Baby

[Magical Girl][Transformation][Funny Person] I, originally a boy, unexpectedly gained the qualification to transform into a magical girl. But why am I a girl now? And why am I unharmed after accidentally turning from a magical girl into a witch? Since that's the case, I'll just go into seclusion. "Captain, how did you find me? Wait, let's cancel that forbidden magic first." "Hoshiori, don't be afraid. This is just a magic that makes you belong to me for ten months. If the other sisters knew, you don't know how many years you'd have to wait." [Newbie here, please guide me]