The Soulless Adventurer

An eighteen year old boy named Daizen along with his merchant father got ambushed by hired assassins during their trip heading to capital. His father and their men were murdered gruesomely while Daizen escaped and got lost into the middle of nowhere in the forest called the Deadwood Forest. While assassins still chasing him, he hid inside a dark cave as he accidentally fell down into deaths portal which lead him to the underworld. He met Death there as Death made him a deal to sell his soul to him in exchange for power he needs to do his resolve, ten years guarantee then after that, death will reap his soul. Daizen agreed, went back to the surface world to do his resolve, but he died in no time as he met Death again in no time, asked him to get his soul back due to unfinished business. Death gave him a deal as he tasked him to be one of his reaper, however, Death revived his human body but soulless.