The Countdown: The One Who Can't Die

Have you ever thought that your life is just an hourglass? or numbers that can ruin your life? Kuro Mizuki, a boy who will experience many things from just a timer. A family's legend that when a timer in the sky hits zero, something terrible is about to happen. Our main character will encounter this timer, but not just one. Everytime the timer hits zero, unexplainable things will happen. The character will wonder wether the family's belief true or the information is just incomplete.