During Yancy Academy's field trip to the Metropolitan Museum of Art, just before Mrs. Dodds reveals herself as a Fury, Percy awakens the Multiverse Sign-In System. By visiting important locations and surviving dangerous events, he can sign in once to receive abilities, bloodlines, weapons, techniques, and artifacts from countless anime worlds. The system's ultimate goal is to forge him into the strongest being across every universe.

St. Louis, the Gateway Arch. The Chimera, a monstrous beast of lion, goat, and serpent, ambushed us. Annabeth, ever courageous, tried to climb the Arch and protect us, but her grip slipped. My heart seized. She was falling.


Chapter 39 - The Arch's Terror