We have known each other for 17 years, secretly loved each other for 7 years, and disappeared after five years. When they met, the sunny young boy and the hard-spoken and soft-hearted girl were sitting on the hospital bed with an oxygen tube inserted and skinny as a stick, watching the pigeons fly by. Maybe I can't see you in the same place, and when I do, you will no longer be the same person as before.
Purpose: To save the other party