Evan is rubbish (all the disciples say so) read what Dan Monte said: "you will never beat the teacher", Dan Monte is no LIAR
His obsession is to crush his teacher like a child crushes ants for fun, to overcome her in everything, he believes that because he is powerful others will accept him because he himself is not capable of accepting his mistakes, everyone is guilty of misfortune that he provoked himself. he is like Griffith from Berserk (but he is charismatic, interesting, and even empathetic), but he is the biggest garbage made character.
Look at Griffith the same damn envious look that Evan has
https://i.ibb.co/ssxsWZ5/91d.jpg
https://i.ibb.co/3fWqgsj/0777.jpg
No, he only wants to steal everything Charlotte has because he himself has no identity of his own (and does not want to get something by his own effort) and envies what she has. (That's why every time he's at a disadvantage he runs away to have more power, later in chapter 56 he lets himself be helped just because he was surrounded by powerful people and couldn't escape). But he's waiting for an excuse to go crazy and destroy everything, and then blame it.
he is like the monster in this story:
https://www.youtube.com/watch?v=AE9qPRIt1vU&ab_channel=kamekameleon
This is what the demon refers to in chapter 1 (checked in chapter 72, I keep up with the raws). And Evan is being influenced by the devil, but he already felt that envy towards his teacher, the desire to be better than her in everything he is doing now is of his own free will nothing is forcing him. He only plays the victim to escape and evade questions (if not compare Dan and Yulian, they did need help). Instead, he doesn't it. He is the happiest that his teacher is weak (in his mind: I'm finally better than her hahahaha)

Man, that was some good Jeffrey-content we got there ლ(´ڡ`ლ)
Evan is really fine too but my heart— it badumps only for that blue haired beauty ε=ε=(ノ≧∇≦)ノ