Center City: here, touching is forbidden, and every person exists inside a sterile bubble. Even eighteen-year-old Li On-yun has no name—only Number 07.
One day, a boy from the Outer City places her before a choice: stay in the familiar, precise safety, or go somewhere where emotions aren’t hidden and people say what they think.
The Center is a place where you can’t get too close, touch one another, or cross personal boundaries. Everyone lives in their own bubble—clean, sealed, and dependable. There are no conflicts, no fights, and no warmth.
In the Center lives eighteen-year-old Li On-yun. She does not speak her name: to the system, she is simply Number 07. But one day a boy from the Outer City comes to her workplace and offers her a decision—stay within the known rules, or step out of the bubble and go into a world where people speak directly and don’t hide their feelings.
Will On-yun be able to overcome her fear, learn to live beyond the Center, and find what it never had—a real connection with another person?