One-Punch Man: Working for a Living, and Saving the World on the Side

[Multiple heroines + ensemble cast + slow burn + Tornado as the love interest] Su Bai transmigrates into the monster-infested world of One-Punch Man. Can he just cling to Saitama and lie flat? The problem is, Su Bai has never even watched the anime! When Su Bai sees King, the strongest man on Earth, single-handedly suppressing a Demon-level monster, he figures this must be the protagonist... Then Genos unleashes his incineration cannon, with special effects so spectacular you can practically smell the production budget burning. Su Bai wonders if maybe Genos is the protagonist instead. Then Tornado activates her psychic powers! Dashing and heroic, she looks down on everything. Su Bai isn't so sure anymore. Until a Dragon-level monster appears! Several S-Class heroes are beaten to a pulp! King hides in the bathroom, soiling himself in terror! Genos gets smashed to pieces! Mumen Rider is blasted a hundred meters away, his life hanging in the balance! Then Saitama, the utterly unremarkable employee at Su Bai's shop, steps forward and punches the Dragon-level monster into a cloud of blood. Su Bai feels like his entire worldview has been ground into the dirt. But the next day, the news reports that King single-handedly saved City Y! Su Bai watches the golden-haired man on TV and sinks into profound self-doubt. It's one thing for this world's information to be a version ahead of mine, but why has it been rewritten beyond recognition?