Son of Shadows.
A Boy named Arin Valtor got his entire town burnt into ashes, rubbles and dust.
Meeting a fatal strike to the skull afterwards with his vengeance deep inside him.
Taken to a Magic medical hospital where doctors can slowly regenerate every mild to severe wounds.
He was met with a system that helped him mostly at the time he almost met death.
Gradually leveling up every day and week, he still needed to get stronger then himself.
With the 'Son of Shadows title' intriguing his interests, and also being relatively confused, he needed to foresee the truth behind his power.
[Just read the rest of it on the Old account named: 'You_have_no_idea' all 7 chapters are there :>]