This is a dark fantasy novel about fate, family love and time. It expands the worldview to the level of "time cracks" and explores profound themes such as "self-identity", "sacrifice and redemption", and "fate and choice". Lin Duoduo's story is not only the growth history of a young man, but also a battle about "breaking the cycle" - can he use his "key" identity to close the time rift and save everyone in the timeline? And will his brother Ouyang Ming find his own "salvation" in this battle?