Otto Von Heidegger Is Game-Brained

I thought I was winning when I was reborn in another world as the third son of a noble. One morning, I looked at my face and realized. I’m the villain in an adventure magic academy simulation RPG game… Moreover, I’m the mean Duke’s third son, a fat man who messes with the protagonist in the first chapter of the school adventure part…orz This is bad, at this rate, I’ll become the victim of a happy ending. Don’t panic!! The game hasn’t started yet. I have to avoid the fat flag!!