A hundred reincarnations, a hundred years of forgetfulness
Su Changge, a doctoral student in philosophy, committed suicide by jumping off a building and fell into the "Nirvana City" - a strange city suspended in the void. Here, every hundred days is a reincarnation, and on the 101st day, all members are resurrected and their memories are cleared. Only those who awaken the "Heart Seal" can carry their memories and struggle to survive in reincarnation.
Su Changge awakened a heart seal called "Causal Echo" - he could see three parallel endings of any choice, at the cost of randomly losing a precious memory every time he used it. He soon discovered that he was the only survivor of the 99th reincarnation. After his memory was sealed by the city lord Haotian, he was thrown into the 100th reincarnation and became the core of an experiment that lasted for a hundred years.
In this death city ruled by four guardians, Su Changge gathers five female comrades with different personalities - the calm and wise criminal psychology professor Lin Wanzhao, the mysterious girl Gu Yunni with explosive force, the gentle medical student Qin Xu who is kind and kind, the cunning and changeable professional fraudster Shen Liuli, and the former detective Ye Qingshuang who is cold on the outside and hot on the inside. At the same time, a "Su Mubai" who looked exactly like him and had a completely opposite personality emerged - that was the negative personality he peeled off in his 99th life.
As Su Changge gradually recovered the memory fragments, a shocking truth was revealed. The "annihilation" outside Nirvana City was devouring everything, and he was the only one who could reverse the cause and effect. Faced with the choice between "sacrifice himself to save all sentient beings" and "escape with everyone", Su Changge chose an unprecedented path
This is a story about forgetfulness and existence, obsession and freedom
"In a cage for a hundred generations, what is imprisoned is not the body, but the obsession. Let go of the obsession and you will be free."
