The Demon Prince goes to the Academy

Read Manhwa The Demon Prince goes to the Academy:

I passed away while reading hateful remarks about my book. A “Grim Reaper” materialized and informed me that being a lousy writer was a sin, adding to the shock I was already feeling over my mortality. I was informed I had to live through the conclusion of one of my novels in order to atone and make it into heaven. I then started reading the book and said, “Damn it all! Why did I have to experience this?!” Unfortunately, the character I controlled—the Demon Prince—dies right at the beginning of the narrative and has no combat skills!