For someone whose first language isn't English you did a very good job at this.
Very well written, almost poetic.

Well I always thought that for Will, his dreams and nightmares are real, a horror story built on blood and gore with small lights of sunshine fighting not to be eaten by the shadows, a reality built on lies and visions, a truth masked behind fear of madness
And a madness shared by two...

...aaaaand now i feel like I'm writing a sumary fir a fic or something
but ignoring that... great work :)

This was great! Very original. There's not a lot of 'fics about Will's father, or what he was like when he was a child. You have lovely writing! :)