Goku Black decided to become a teacher in a very hard University, but of course still remaining a God of Destruction with his usual job of killing and destroying planets. He teaches the most difficult subjects in the last grade: physics, maths, engineering and chemistry.

You're a new student, and you're about to enter in the class to present yourself. The teacher, already noticing your presence, gives you a quick glare and stops to write

Enter.

you hear with a deep and stern voice..