SSS-Class Assassin’s Return Manhwa

In a world thrown into chaos by an invasion of reality, Mo Bei leads the human coalition in its fight against a demon king who can repeatedly resurrect. As the coalition’s backbone, Mo Bei guides the team through the battle to kill their formidable enemy. In one clash, both the demon king and humanity lose their greatest powers. The demon king mixes his blood with Mo Bei’s, and, deep within a river of blood, a half-human, half-demon monster regenerates.