My Class is The Grim Reaper! [LitRPG+Growing through death]

Htrea-a vast world occupied by myriad races. In the harsh deserts of the Baras, Yomon, an adventurous teenager with high ambitions, gets his dreams crushed after a devastating betrayal. A betrayal he barely survives through luck and a new power. The power to grow stronger through killing! A tumultuous time awaits Yomon, and with hatred burning in his heart, will he survive, get his revenge, and achieve his dreams? *** This story isn't going to shy away from anything. You'll find culture, races, and religion mentioned inside. The MC will interact with all those, not just observe them, with the mindset of a higher culture. His viewpoints will mature through time, and his personality will change. What you can expect: +Heavy world-building +An intricate power system +Little filler, but there's some slice of life +Weak to strong MC +No Harem