Bone King: The King's Downfall

For Hades, joining the 1,500-player raid on the Great Tomb of Nazarick was initially just about satisfying his curiosity to see the ninth-ranked guild in action. But when the undead skeleton player known as "Momonga" cornered him with overwhelming power, taking his life while looking down on him and asking, "You want to dance too?"—everything changed. In that moment, Hades realized his sole remaining goal in YGGDRASIL was to overthrow the heteromorphic guild Ainz Ooal Gown and crush Momonga beneath his heel, spitting on him for good measure. Yet as the years passed, old grudges faded. On the day the game was set to shut down, he logged in one last time to pay tribute to his youth—and found himself transported to Nazarick alongside the very being he once swore to destroy. The story follows a single timeline where both Hades and the Bone King are isekai'd together, with no multiverse-hopping or elements foreign to the OVERLORD world. It stays faithful to the core lore, drawing from the novels, Maruyama's interviews, his Q&A on X, and supplementary D&D 3.5 and 5E materials, with a few personal secondary interpretations designed to fill in gaps where official sources remain silent. Accessible to both die-hard fans and casual readers—though purists who demand every detail match canon down to the letter may want to look elsewhere, as this is ultimately a work of fan fiction, not a mindless power fantasy.