The killer Yan Binghan needs three things to kill: the sound of the piano, the inkstone, and a set of weird rules called "Seven Unforgivables".
The Jiang family is full of people, but it is unclear why he was "forgiven". All he knows is that overnight, the mansion became his latest "painting hall." The blood is cinnabar, the bones are chapped, and the lives of more than three hundred people are a meticulous painting that he shows off to the world.
The only survivor, thirteen-year-old Jiang Hanying, died in the light. He fell into the Longyuan Pavilion, the filthiest place in Caogang, and breathed among the mud and poison. What he salvaged from the abyss was not a sword of revenge, but a mysterious volume of "Compilation of Hundred Poisons" and "Yin Fu Ce".
When hatred is soaked in venom, when young people learn to think with shadows. His revenge will not be a fight with swords and swords, but a subversion and sacrifice of "beauty" - he will use Yan Binghan's most obsessed way to inscribe the coldest epitaph for his lifelong "aesthetics" with his own hands.
