Legend has it that there is a purple butterfly, which is a symbol of happiness. People say that if you find it, you will forget sorrow and pain.
Some people also say that happiness is a purple butterfly, which is hidden in people's blood and flows continuously...
Will the anonymous killer Yaksha and an ordinary librarian have a moment of love focus? What made him give up his massacre? ． ． What will happen when a mysterious visitor arrives? Will he be the purple butterfly he is looking for in his heart? ．
The love story of the legendary killer is about to unveil magnificently. ． ． ． ．