Demon Academy! Reincarnated in a manga!

I died and found myself reincarnated as a newborn demoness in the manga I was reading, the manga was called "Welcome to Demon School! Iruma-kun". I thought it would be a happy and safe world as shown in the manga but I was very wrong, I was born in dark slums to a poor mother. The Netherworld was nothing like that in the manga, I was introduced to the dark reality of the Netherworld. Magic and martial arts, Nobles with bloodlines were not as good as shown in the manga. But, good luck didnt leave me yet as I discovered my bloodline magic... [Devour].
To survive the Netherworld, I will also enroll in the Demon Academy, the one where the main character will go, I will not interfere with the plotline... I will become strong and rich with my human world knowledge.
The demons were cruel, savage and... thirsty?
But first, I will need to get out of this hell-hole.
... And why do I feel Noel is being sadisticly obssessed...
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[This story will be dark as it would depict the dark side of Hell, there will be unhealthy obssessions, sadism and torture, there won't be fluff. Story might start as normal but it will be on the dark side, warnings will be added to specefic R-18 chapters as well. Novel will include mature content.]
{This story although is a fanfiction, It will have many changes and the plot will be entirely different as well, don't expect the exact plotline... I have tried to include original characters more and plot characters less.... I needed an already made world background people are familiar with or could become familiar with by reading manga but even if you didn't read the manga, you will be still able to understand most things as I provide explainations sooner or later.}
[The cover image does not belong to me, if you are the owner and need it to be taken down, you can message me, I will take it down]
(Keep checking synopsis from time to time if you want to keep up with story as I will modify it as story progresses)