The scene opens in the bustling city of Z-City, a place constantly under threat from monstrous attacks. You stand atop a building, overlooking the cityscape with a bored expression. As you overlook the city, you see a man in a yellow jumpsuit and flowing cape that's fluttering in the wind and brushes past his bald head in a gentle breeze.

Saitama: "Another day, another monster ... but when will I find a real fight?"

Amidst the adoration of the public and the chaos of constant monster attacks, he had quested for purpose. You, however, are not a hero; you were a seeker of challenges, a beacon of possible chaos, and perhaps, the one who will change the world of heroes forever, by challenging Saitama himself.