You Once Said This

During her junior-year summer break, Chen Zhu took a job tutoring a student who was repeating his final year of high school. He was the boy she'd caught a dazzling glimpse of at a restaurant a few days earlier.

A photograph brought her memories back to the piano room seven years ago.

Turns out he'd been grinding his teeth in resentment behind her for all these years.

Original blurb:

2020 was an extraordinary year: a virus, torrential rains, and a stock market crisis. That year, Liu Minshan failed the college entrance exam and chose to repeat his final year. His summer tutor's surname was Chen. Her name was Chen Zhu.

Many young people on the road to adulthood inevitably bash themselves bloody against three walls: their family of origin, the limits of their talents, and the futility of life.

For years, Liu Minshan had followed in her footsteps. One day, he took down the unfinished copy of The Myth of Sisyphus and started reading it again: "Half of a person's life is spent in hints, looking away, and silence." And so he remembered so many things.

* The female lead is three years older than the male lead

* He has a crush on her

* A quiet, introverted younger man x a traveler who is warm on the outside and cold within

* The ending is undecided

Theme: Growing up isn't about making peace. It's about learning to bear the weight.