He was killed several era's ago but has been wandering the world as a spirit alongside humanity and its history. He observed famous historical figures from all over the world. Learned marital arts from observing ancient masters without anyone noticing. Yet he still feels trapped without being able to affect the outside world. Only now does he get sucked into a high school student's body on the verge of death. What will he do now? Enjoy life or control death? (inspired by the chinese novel Awakening)