I’ve decided to kill the person responsible for my sister’s death. So I went back in time. His sister Yuuka’s suicide was the result of bullying. Her heartbroken brother, Asaharu, is suddenly confronted by an angel. The angel tells him, “If you kill the person who sent her to her death, I’ll bring her back to life.” He has 3 months. If he fails, he has to restart his life all over again, but with years cut from his lifespan. Will his death come first, or will his sister’s death be reversed? The unpredictable leap of suspense begins!