Solo Leveling: Ragnarok Project Arc

Twenty-third in the Ragnarok sequence, this arc covers novel Chapters 316 to 342 and was never adapted into a webtoon. It comes after the Frost Elf Monarch Successor Arc and feeds into the White Abyss Arc. Its settings stretch across the World Tree and the Tower of Trials, the Sea of The Afterlife, the offices of Ahjin Soft, and the USA. Two strands run through it together: Suho gathering new companions, and the public unveiling of a worldwide training scheme founded on the Tower of Trials.

The long search for the World Tree bears fruit when Esil at last pinpoints its location. Arsha dispatches her worker bees to gather Elvenwood pollen and passes it along to Suho. After that, Arsha, Ammut, and Gray cross into the Sea of The Afterlife, locate Esil, and follow her to the tree. Two major Nidhogg battles punctuate the arc, one cut short by Suho's appearance at the very moment Ammut climbed to monarch rank, and a second that also breaks off, this time joined by a sprawling alliance of demons, shadow dwarves, ice elves, and others. Suho beats the Apostle of Conquest himself, while in the Tower of Trials, Thomas Andre perishes to Legia a staggering number of times before pulling off a win, then slays an Apostle of Conquest of his own.

Suho's circle of allies widens sharply. Arsha formally joins him and, through the Seed of Evolution, evolves out of her Queen Bee Lv.99 form to become a Void Insect. Ammut ascends to King of Monstrous Humanoids and Monarch of Trials, and his rebirth at monarch rank frees him to roam past the confines of his pyramid at last. Suho recruits Ammut as well, receiving the Tower of Trials as a gift from him. Later, Suho picks up the Spiritual Body Manifestation skill, and Thomas Andre rises to King of Giants, taking the role of Monarch of Conquest.

The arc's public pivot arrives when Towers of Trials surface at sites all over the planet. Yoo Jinho, who heads Ahjin Soft as its CEO, announces the Solo Leveling: Ragnarok Project, billing the towers as hyper-realistic grounds where every person can train up their combat skill. Thomas Andre becomes the first human to step inside one, and Lim Do-Gyu is revealed as the company's new director. With monarch-level allies in place and the global training rollout underway, the narrative carries forward into the White Abyss Arc.