Seven Deadly Sins System - Chapter 14: Blood Demon Body, Heart Seal

Once upon a time, an Alchemist Grandmaster from the World of Immortals accidentally took possession of a playboy, who hailed from a rich and powerful family, and became a student in the middle of his midterms.

Humbra bleeds, devastated by an unrelenting race for survival against the Leirions—powerful monsters intoxicated by their bloodlust. Amidst this chaos, a young orphan, haunted by his brutal past, discovers he is the catalyst to a greater future—a future far darker than he could ever imagine.This is Leonard, a boy whose destiny entwines with ancient secrets, betrayals beyond reckoning, and a world-shattering rage.Humanity already struggles on the edge of the abyss. The light of hope has long been extinguished, ushering in the darkness and heralding echoes of lament... But from this despair, a new hope flickers: the Neumonds, wielders of powers that transcend life and death. Are they saviors... or harbingers of a final, devastating curse?Will Leonard save them all... or will his desire for vengeance end in a valiant death?

The youngest Wiseman of the continent, Chu Tian, has traveled 30,000 years back in time to the age of antiquity due to an accident.

You might not believe it when I say this, but not all top students are the same!-------------------------------No system, high intelligence, character-driven slice-of-life book!