A Reaper's Philosophy ARP

A 17 year old young man named Grayson goes through hell at a young age in order to have a painful philosophy instilled in him. He now takes it upon himself to enforce this philosophy to all those around him. Be it animal or man. An ancient evil takes notice of him and his potential, fulfilling all of the requirements to be his successor. Who is this ancient evil? What is his past? Will Grayson be strong enough to go against his destiny?
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First time writing...
Hope you enjoy the read and send some support/gifts to keep me writing.:)
- Shoutout to @Fgh360 for proofreading.