The Undying Monarch

Betrayed and thrown into the abyss, Arthur awakens a system glitch: "Death Asset Retention." By willingly dying a thousand times, he hoards a massive undead army and returns as the Undying Monarch! He doesn't just crush his betrayers and win the loyalty of an icy Valkyrie—he leads an undead scourge to slay the gods and crowns himself the new king of the world!