The Dangerous Magician

What, I'm a magician? ! Is there any mistake? Hey, there's a prince and a school, it's pretty good~~~ Wait, God, why am I so unlucky when I come here! Oops, little guy, if you dare to provoke my sister, I'll see if I don't turn you from a handsome boy into a cockroach! Also, comrades who are passing by are welcome. If you don't collect or recommend it, the evil people in the magic world will come to trouble you!