Invincible Domain: From Loser to Ruler of Three Realms

Bullied loser Luke accidentally frees Lucifer and gains an invincible domain. To break three seals, he forms steamy pacts with a rich heiress, a demon-hunter saint, and a seductive succubus, building his harem. After crushing bullies and hypocritical Heaven, he saves Earth, rules three realms, and wins all three beauties.