Xin Yun has lived many lives, and he has failed in every one of them, always choosing to take it easy rather than put in real effort. After his latest rebirth he finds himself back in the past, with a chance to alter where the future is headed. This time he commits to the path of self-cultivation, determined to grow into the real hero of his own story. Long Shidai is a 26-episode ONA that blends action, adventure and fantasy.