In his previous life, he didn't know that she had already suffered from severe depression.
She chose suicide because of the pain and chose to end it all.
She wrote in the letter, "Achen, I regret the decision I made when I was 16. I don't want to go abroad. I promised to marry you because I like you."
Only then did he know that she liked her
Back when he was 16, every step he took was to get closer to her and protect her.
He confessed to her "I like you"
He remembered that she once said, "I regretted going abroad when I was 16."
He told her "We're going to a college."
Hand in hand through everything... The lovers will eventually get married!
PS: This is my first time writing, so there may be flaws. I insist on original writing and write my own novel.
Concept: Original