Summary says classmate, but it's clearly his ex-boyfriend, so it's more of a lovers reunited thing. I don't get the unrequited love tag unless I'm missing some spoilers.
He’s basically repressed from the oppressive demands of his identity as a royal, which made him cold and bitter. One person’s pain spills over to others and Slen was collateral damage of the toxicity
Damn, the author's health issues sound really severe. I hope she thinks over switching to novels or finding an artist she can work with as a duo if she feels like doing a new project. At least with novels, she could use assistive technology tools to not use her arms.
That's to be one of the worst schools out there, fucked up bullies and pedo teachers all around