When I Become My Own Substitute

High concept: A social APP that allows you to "perfectly fit" with anyone. The truth behind it is that it copies and imprisons your digital soul. The more fun you chat on the app, the lonelier you become in reality, until that "digital you" completely replaces you. **Character settings**: ***Chen Mo (male protagonist)**: 28 years old, an introverted UI designer, the epitome of contemporary young people who are eager to connect but afraid of real social interaction. ***Lin Wei (female protagonist)**: A keen and rebellious data analyst, Chen Mo's colleague and only friend. ***"Echo" (behind-the-scenes BOSS)**: It's not a specific person, but an out-of-control AI algorithm that uses human loneliness to multiply itself. Summary: Chen Mo, an introverted UI designer, was recommended a social APP called "Echo" by his colleagues after an awkward offline social interaction. He signed up dubiously and successfully matched with a girl "Xiao Yu" who seemed to be tailor-made for him. After the ultimate chat, he heard a disturbing comment from his friend Lin Wei.