Ling Che, a former space-time agent, was deprived of his memory because of his resistance to power. He became a modifier who was forcibly bound to the "emotional repair system" and was forced to travel through thousands of worlds to perform "strategy missions." He thought he was just completing cold instructions one after another, but he bumped into the same man named Su Muyan in every world - not only could the man see through all his disguises, but he also always had a sense of familiarity that spanned time and space, protecting him behind him time and time again, breaking through his frozen defenses with seemingly careless gentleness.
From the hail of bullets of the warlords of the Republic of China, to the desperate cabins of interstellar pirates, from the palaces of immortals in the world of immortality, to the ruins of the apocalypse, Su Muyan's figure is everywhere. He remembers Ling Che's little quirk of not eating coriander, remembers how he would tighten his clothes when he was afraid of the dark, and even remembers Ling Che's casual remark about his love in the previous world.
Ling Che gradually fell, but was shocked by the system's warning: the so-called "strategy" was actually a massacre against Su Muyan. Every failure in a mission eats away at his soul; every time he is hurt according to the script, it eats away at Ling Che's heart. And that poisonous tongue system was originally the last remnant soul left by Su Muyan when he was about to die, and it silently protected him for ninety-nine worlds.
When the truth cut through time and space like a sharp blade, Ling Che finally remembered: they were once comrades in arms sharing life and death. Su Muyan fell into the turbulence of time and space to save him, but used his remaining soul as an anchor to travel across thousands of worlds to find his traces. This time, Ling Che held his hand tightly and declared to the powerful man who controlled everything: "The mission is over. From now on, I have only one goal - to protect his eternal life."
The story is about the tension between sweetness and cruelty
