Chu was still a time traveler. The world she traveled through was similar to the previous world in terms of culture, technology, etc. If she hadn't felt so unfamiliar with the names of various celebrities in this world, she really wouldn't have discovered that she was not reborn, but had shrunk after time traveling.
After being adopted, she had a naughty younger brother, a gentle sweetheart, and a best friend with whom she could talk about everything.
However, the world seems not as simple as she imagined.
Her relationship with her sweetheart and best friend also changed after graduating from high school...
Intention: Integrate or persist