Who Tugs at the Heartstrings of Those Born in the 1990S?

I really like a sentence I saw online - My departure is just your regret, and your betrayal is just my transition to maturity. I wrote a short article inspired by this. I don't know what the title of the book should be, so I borrowed this short literary article... My writing style is not very good and I don't know what I want to express, so I'll just treat it as a short story~ Intention: