Surviving in the Demon Academy as My Novel's Final Antagonist

I just finished writing the last chapter of my novel, [Powering Through the Prestigious Academy With No Talent], where the final villain was defeated by the protagonist. This novel that I designed meticulously from head to toe...was now done. The protagonist shakily pointed his cold blade at the villain's neck, "Any last words?" The villain wasn't fazed, despite nearing his death, and smiled widely, as if mocking the protagonist, "No, nothing." "Just kill me." "...Very well.", and with one slash, the villain was killed. In the end, such an outcome was inevitable, no matter how powerful the villain became. And that was the ultimate satisfaction for any avid reader. But the next moment, I suffered an excruciating headache, and collapsed before I was able to upload the last chapter.  Unexpectedly, when I woke up and opened my eyes, I wasn't in a hospital, nor my room, but a cemetery. I felt around my clothes that were getting drenched in the rain, and saw my dashingly red hair in a puddle nearby. My face was now completely different from before; my mouth naturally tugged upwards, and my eyes became slits as if they were sewn shut. Unmistakably, I recognized this appearance, which I had envisioned countless times. No, wait, why do I look like that guy? Where is my computer? My phone? Eventually, I realized--I'd reincarnated as the final villain in my novel! The ending scene of the villain dying by the protagonist's hands flashed through my eyes, and I remembered the words I said right after I wrote it. It's inevitable. "...I'm screwed." -- Note: Hello everyone! I'm also posting this novel on Webnovel with the user IFC, though chapters are free on both sites Release schedule is ~4-5 chapters per week! Expect: - No romance - Long novel - No litrpg (no numbers, levels, anything, there is something that looks like a system but is not, and is explained later) - No 'just be nice and you wont die' kinda story - progression, weak to strong Please enjoy this journey with me. If you're reading my novel, thank you for checking it out!