In the height of summer during their second year of high school, sixteen-year-old Fu Nianchu meets seventeen-year-old Lu Shi'an. For Fu Nianchu, love is the way his heart seems to skip a beat the first time he sees Lu Shi'an at a convenience store. For Lu Shi'an, love is the feeling he discovers when he looks back on a rainy night. But regret is everywhere. They don't have fate's favor, and they don't get to live happily ever after.
Regret is [Your "I'm sorry, let's break up" happened to fill in the beat I'd missed when we first met.] -- Fu Nianchu
It is [Another rainy night, the same feeling of falling in love, but this time you didn't even look back at me.] -- Lu Shi'an
Regret is [We loved each other so much, but we couldn't stay happy forever.] -- Both protagonists
Theme: Regret is the ordinary state of human life.
