Fate: Starting with Iron Man Tokiomi Tohsaka, Beginning of Making Jokes

Iron Man Tokiomi Tohsaka, Kiritsugu Emiya (father of magical girls), Kariya Matou (dark swordsman), King Arthur (who spews profanities)... Captain Uchiha Sasuke (Bleach), Naruto Uzumaki (Primarch), Sakura Haruno (true progenitor of the vampire clan)... The Marvel Universe, teeming with heroic spirits and visitors from parallel worlds; Digimon from the Pokémon world; a crossover world invaded by supernatural tales; EVA, where Ultraman descended... In each world, beings that shouldn't exist have appeared, bringing a worldview-destroying shock to the inhabitants. "Yes, I did all of this. As the Fourth Calamity, wielding the 'Funny' system and with the profession of 'Masked Fool,' it's perfectly reasonable for me to do things that make people's vision go black, right?" "What? You're asking what those people who saw another version of themselves in a parallel world and were driven to nervous breakdowns think?" "I think..."