Baal a fallen demon king over 2000 years back there was a demon king Baal know for his power to even destroy the gods.
He was feared amongst all even his army he commanded but there was one hero named Micheal also know to his people as the supreme being but he has fallen countless times to demon lord Baal and been resurrected.
And now in 3019 the demon feared and now forgotten in this magical world.He been reborn
And now he attending a demon magic school know as demon high (it only accepts demons race as student) he is put in as a misfit as he is no noble so he is treated as the weaker demon but when it finally came to aptitude tests he came at the top he had to fight 1v1 against noble for battle marches and completely demolished the battle arena so now he is finally feared among the students.