If you could turn back the clock and fix all the mistakes you ever made, would you? For Micheal Care, a swordsman that could only be considered a middling warrior in Humanity's Last Army, the answer to that question would be quite simple. Yes. A million times yes. Humanity has fallen, wiped out after being warped away to a new reality, the mystical 7 Layers. Humanity's goal had been simple. Make it through all 7 Layers and reach Heaven. Humanity failed. Humanity died. Micheal Care's memories have been transported back into his past self thanks to a magical Artifact he found by chance. He is no chosen savior. He is no divinely picked hero. Can he change the future? Can he catch up to the mightiest warriors of humanity and surpass them? Read on and find out.