One Hundred Million and One Solutions to the Protagonist's Death Equation

As a proper urban, fantasy, otherworldly, overpowered-hero, slice-of-life comedy novel, if you think this work fits any of the tags above, then your way of reading must be the problem (//0.0//). ... ... In this world, anyone can become the protagonist! No, no, that's impossible. "People who casually decide they're the protagonist will die, you know. Like me, I've only died a few tens of thousands of times, probably.", Some unscrupulous little girl