The true hiding mob

The story is about Aïden, a 22 year old man who is stuck in the hospital because of his weak constitution and the only friend he has is Mark, it comforts him to have a friend like this and allows him to not think about his family who treat him like nothing but a problem and make fun of him, even people on social media make fun of him. One day he suddenly dies and transmigrates to another world thanks to people with extraordinary strength who want to force him to help the hero beat the demon king but the world he woke up in is not so foreign to him. The English is not my first language so it's possible that you find mistake so if you find one don't be annoying and don't insult me, of course you can report the mistake.Please be nice it's my first novel.