She met a beautiful person during a period of time, and she thought the future would develop along the same trajectory as him, until... She lost contact with him. A few years later, fate dictated that they met on the beach. But in the end, they discovered that he and she were no longer in the same time and space, so where was her other self in this time and space? How did this happen, and who is controlling it?
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.