Su Yin reveals the truth: the cycle was never about defeating the Devil God. It was about him choosing to stop . The 40.480th heartbeat is the last moment free will exists.
The Demon Army invades the Silent Clock. Mo Ran is offered the Heart of Annihilation – if he takes it, he can rule all realms forever, but Su Yin will be erased from existence across all timelines.
Instead, Mo Ran asks: “Why do you keep coming back?”