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Death and reincarnation. Kuroe Makoto, the tomboyish ace of her high school track-and-field club, never spared a thought for these things before. However, when she falls asleep in her Tokyo home after an exhausting marathon and wakes up in a fantasy world, those concepts become her reality. Unlike common light novel settings, she isn't reincarnated as the naturally good-looking and talented human hero who gathers a harem effortlessly. In fact, she isn't reincarnated as a human at all. She is reborn as "Chaos", child of the demon queen and heir to a kingdom at war with humanity.

Hunter McNeil, former soldier and ex-superhero, just barely survived his last mission in Tokyo. But with his forcefield powers back at full strength and two smoking hot superheroines on his arm, he’s on to his next challenge. Unfortunately, the supervillain in charge of San Francisco is ready for him. Nexus is a late-21st century Silicon Valley trillionaire who used his vast fortune to gain superpowers and create a hi-tech robotic suit of armor. Now he’s taken the entire Bay Area hostage, threatening to kill a thousand people every hour if Hunter doesn’t back off.