
Spoiler I read the novel, probably gonna write until the end. Note that this is the general scenes, there are mini scenes of ML and FL note included.
But gotta say they didn't end up, like wham! We're back again, they actually go through the process of accepting, forgiving and not in a relationship for a while just to let each other breath.
First the novel is soooooooo well written, Second the ML has the BIGGEST INFERIORITY COMPLEX.
After she hang herself and survive ML finally approved the divorce in exchange of her staying alive, FL unconsciously agree and promise to stay alive. FL then stay with her gun man's sister (she fell sorry after hearing FL commit suicide). FL start a new life in neighboring town together w/ her gunman's sister and family, she sort of become a Nanny for their child.
A war broke out and FL volunteer in front line as citizen nurse, she thinks doing this is right for her atonement (but homegirl didn't even do anything for her to do atonement╥﹏╥).
While in war ML hear the rumors of FL being in front line and actually made the FL leave it, like order from above or something. When FL was transferred to west (not dangerous like front line) they met again. Note that it's been I think a year since they last met ftf.
Thats not enough for ML so he thinks of sending FL to another base far from the front line and west (also cause a 3rd ML, a soldier in west have a crush on FL). So ML kept FL in his barracks for a while and actually FL help them solve a cryptic message from the enemies that is written in piano sheets.
After that the FL was sent to the far away base, the war actually broke there and put her on far more danger. At one point when they are escaping they were trapped in a burning church (FL actually played the piano again before the church burn for a child) and FL injured her hand saving a soldier when they try to escape the fire. ML rushes to the scene and personally dugged up the church ruins to find FL, only to got shot by a sniper when they rushing FL to the car.
They end up staying in the same hospital where the ML is refusing to see the FL but when they do at some point they kiss, not the sweet and love kiss but a bitter kiss symbolising regret and forgiveness.
They didn't start their relationship again but promise to stay friends and write to each other while FL lived alone in a seaside house.
ML suffer from hearing loss in one of his ear cause of a bombing. But once the war is ended they do start seeing each other eventually more on casual yet have a pinch of romance. (FL actually wondered if ML still likes her cause ML won't touch or make a move)
In the side stories they do end up marrying each other again quietly after the ML retire from his position after the war and they have children.
The End

Want to add some cute side scene, the Child the FL play the piano for in the church actually survive and like get attached to FL, in the hospital the child is also there and there is this one cute scene where FL is reading a book to the child and when they asked ML to read it, he run away cause of embarassment.
When FL leave the hospital to live in a seaside house, ML read the book to the child and ML take the child with him when he got home. (They do think of adopting the child but didn't do so because they both know they are not emotionally ready and available for that, they end up finding a loving family for the child)
can someone pls spoil me I wanna know what happens until the end