I am but a hungry anon begging for a crumb of Crowley or crewel content
*turns to dust and fades away*
Oh, I just love the power imbalance in yandere!teacher x student relationships in fiction, it has so much potential since its roots come straight from not only the fact someone older and more experienced is pursuing you, but also someone that represents a authority figure.
Being manipulated by Divus with your fear of being unfairly punished with detention or humiliated during class for asking a simple question, getting your grades modified, slowly getting isolated from your friends that are punished by him for getting too close to you in his class, until he finally manages to get you completely left behind by others, not leaving you a choice but to accept his company, having him and only by your side. Once he gets you all alone, it'll be easy for him to swoop you somewhere isolated where he can alienate you to become his obedient puppy. That is, only if you do not wish to be punished and Divus loves to punish disobedient pets, at the end you'll become what he always wanted you to become with the raw bloody pain from his whip.
And as for Crowley...well-
Sorry to fail you anon but I can't phisicaly take this man seriously enough to write or draw him on a yandere scenario 😔