I don't think everything was a dream, the events that happened to the two of them were real and their meeting again and healing together was real, the only thing that wasn't real was hallucinations of the boy (himself, the hurting younger version that was trying to tell him to let go of the burden his parents left him with). His PTSD had manifested so hard that the tragedies around him, which may have been really unfortunate coincidences, fueled his fear of his writing being like a sign to die (kinda like the Death Note, obviously), the only other thing that wasn't real around here was that his writing affected real life, it never did, but his guilt of his parents' death and the burden put on him to carry their, or in his mother's selfish wish, his father's burden within writing, made him develop anxiety and the accident only furthered it sending his fear into a spiral.
The part that was a dream in the latest chapter was him seeing the boy after finding the lost book his father wrote, when he finds it, it's implied by the ending sequence that he sat down to read it, drifted off and dreamt that he saw the boy again after he'd fulfilled the boy's wish to let go and heal and finally acknowledged him in a soothing way, as in a way of self acceptance, rather than waving him off and subsequently waving off his past and suppressing the hurt it left him with. He hugs him, finally healing a part of himself and saying "Welcome Home" as a way to welcome the part of himself he locked away to try and move on. He wakes up happy, saying what a beautiful dream it was because he finally felt like himself, and he was content.
I don't think everything was a dream, the events that happened to the two of them were real and their meeting again and healing together was real, the only thing that wasn't real was hallucinations of the boy (himself, the hurting younger version that was trying to tell him to let go of the burden his parents left him with). His PTSD had manifested so hard that the tragedies around him, which may have been really unfortunate coincidences, fueled his fear of his writing being like a sign to die (kinda like the Death Note, obviously), the only other thing that wasn't real around here was that his writing affected real life, it never did, but his guilt of his parents' death and the burden put on him to carry their, or in his mother's selfish wish, his father's burden within writing, made him develop anxiety and the accident only furthered it sending his fear into a spiral.
The part that was a dream in the latest chapter was him seeing the boy after finding the lost book his father wrote, when he finds it, it's implied by the ending sequence that he sat down to read it, drifted off and dreamt that he saw the boy again after he'd fulfilled the boy's wish to let go and heal and finally acknowledged him in a soothing way, as in a way of self acceptance, rather than waving him off and subsequently waving off his past and suppressing the hurt it left him with. He hugs him, finally healing a part of himself and saying "Welcome Home" as a way to welcome the part of himself he locked away to try and move on. He wakes up happy, saying what a beautiful dream it was because he finally felt like himself, and he was content.