Twisted Wonderland: Blighted
Yuri Wren was a quiet, sickly boy. He didn't have any friends, as the other kids either avoided him like a plague, or tormented him mercilessly. The only break he got from their cruelty was when he was sick. The caretakers of the home rarely approached him if they didn't have too. Looking the other way when the children were particularly cruel.
He usually spent all his time alone, left to read or draw quietly in his room or under a tree... If he was even allowed outside.
The only friend he had was a small, mouthy dire cat beast that sometimes approached him when he was under a tree or even sneaking into his room. His name was Grim, and he was the closest thing he had to a companion. One like himself with no knowledge of where he came from or who his family could have been. Why he might have been left behind.
This was Yuri's small existence. One that changes when he wakes up at an arcane academy known as Night Raven College. A place for up-and-coming young mages. Which Yuri, who possessed not a drop of magic, couldn't be.
And yet, under unusual circumstances, the Dark Mirror confirms that he is in fact a student for this school. Even if not as a regular student. Though Grim, who eventually manages to track him down, seems to think this place is better than the home ever was.
Out of worry that he'd be returned if his unstable health is discovered, Grim and Yuri decide to keep it as secret as possible. Though for how long they'll succeed is unknown.
So, with his protective familiar by his side, Yuri and Grim begin to navigate their wide new world full of different people. Personalities. Ambitions. Knowledge. Histories. And experiences they never had before.
They learn more about their world that was such a mystery to them. But not all of it is good. In addition to the new experiences, there are also many dangers that they're introduced too. Such as over blot and its disturbing origins and effects on the mages who suffer it.