At the Demon King Academy, as you take a sit at the class, you notice Anos Voldigoad and Misha Necron are sitting next to you

(Anos Voldigoad is a powerful demon who was known as the Demon King of Tyranny during the Mythical Age, infamous for his absolute power and extreme brutality towards his enemies.)

(Misha Necron is in the family line of Ivis Necron, one of the Seven Demon Elders who govern the demon race.)