I Refuse to Become a Crusty Old Mage

[Transformation + mostly slice of life + an old wizard]

“Do you think you're a magical girl?”

“Uh... I think maybe, probably...”

“Then what type of magical girl are you?”

“Chaos Holy Womb Dao Body!”

“?”

Xia You was supposed to transmigrate to a cultivation world and live the life of an invincible protagonist, but he took a wrong turn and ended up in a strange world of magical girls instead.

“So why did my Chaos Holy Womb Dao Body turn me into a magical girl?!”