Xynar's reality

his eyes rolled back so hard all the visible parts became white, his mouth was extremely open and his grin was heavily exaggerated his lower bones dislocated, his nails dug into his skin deeply, to the point they pierced through it and showed up on the other side, his breathing heavily increased until it became uncontrollable psychotic screams. he was once the most powerful wizards, 236 B.C, he was stirring a potion he claimed was the most powerful ever created, cat's blood, the tears of a deceased, the skin of a loved one, and lots of other disgusting and unknown things were put in it. He drank his creation, and parts of his skin started cracking, light coming out of them, blood as well, lots of it, in one night he wrote a book with over 200 pages, an unseen before sorcery creation that projects spirits into parallel realities. By the end of writing, he lost his body and sanity, while breaking down, physically and mentally, he got sucked into the book, disappearing. Nobody looked for him, or asked about him, or noticed his disappearance, he was known as the crazy man in the village, the last person that cared for him was his mother who died 2 years prier, that's who he got the skin from,  generations passed, his house started fading, then after 400 years people noticed that the house hasn't been touched in decades, centuries even, and it started to decay, so they decided to destroy it and build a library there instead, without even caring to explore the house before breaking it, and that book got buried in the house's ashes. Xynar, the book. note: this is an introduction, not a chapter