Memory Screenwriter

I am the only person in the world who can modify my memory, but I never touch my past. Each time a happiness script is customized for a patient, the fee starts at seven figures. Until one day, a chasing light suddenly lit up in the patient's memory theater. In the audience, sat my sister who had been "dead" for many years. She smiled and clapped: "Brother, you directed this play so well." The cover of the script in her hand had the date of my childhood fire clearly printed on it.