Demon Slayer

He was just a teenager, but he was ruthlessly teased by fate! He was just a young man, but he lost his loved ones one after another! The young man should be happy and happy, but what has he lost? What you get in return is endless pain and torture! What is his fate? ? Young man, can you change the situation between light and darkness? Can this young man take on the important task of saving the world? Can the boy destroy the demon king who has existed for thousands of years? Can this young man create the highest realm of magic? Watch the fierce battle between the boy and the dragon-slayer and god-slayer wizard! Watch the fierce battle between a boy and a devil fruit user! "Kill, leave no one behind, I will destroy all of you disgusting people so that you will not dare to invade my paradise again"! ! ! The writing is not good, I hope you can give me more suggestions... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.