Helck

Helck is a fantasy manga series published by Shogakukan from 2014 to 2018, spanning 12 volumes. Created by Nanaki Nanao, it follows a powerful human warrior who, after the Demon Lord is defeated, unexpectedly enters a tournament to become the new Demon King, drawing suspicion from the demon overlord Vamirio. The series blends comedy, action, and emotional depth, subverting classic hero-versus-demon tropes while exploring themes of trust and sacrifice. Its unique premise and character-driven storytelling earned it a devoted following and later an anime adaptation.