The Chat Says Going Dark Makes You Three Times Stronger

Ordinary guy Tsurumi Naoki lives in a world full of extraordinary people and superheroes. Getting caught up in superpowered battles two or three times a week is just part of everyday life. Fortunately, in this chaotic world, plenty of kindhearted heroes of justice keep things in order. That is, until one day Tsurumi Naoki gets bound to a popularity-based secret identity System and discovers that the heroes of justice are destined to fall into darkness as the story unfolds. Stopping it requires the System's power, but every secret identity he draws is an evil alternate-timeline version of one of those very heroes. Tsurumi Naoki: ...What is this supposed to be? Am I fighting myself? ...The magical girl who once blasted a city to rubble with magic: [Scarlet Tyrant]; the headless knight who became a monster after being modified and losing control of her desires: [Cursed Moon]; the [Undying] who mutated, lost all sensation, and completely abandoned her human identity... The heroes of justice who protect the world stare at these cold, unfamiliar faces so much like their own, aghast. The comments have already kicked off another celebration: [Haha! I knew this was a Dark Multiverse event!]