Lemon

Whelp, I couldn't put this down. I went into it warned: it's not a normal mystery and do not expect answers. Lemon is a set of interlocking stories about 3 people left behind after the murder of a teenage girl named Hae-on. One is the rival pretty girl. One is a school mate, and the third voice is her younger sister, Da-on.
This murder changes the course of everyone's lives in big and small ways. Da-on spends years trying to replace her sister by becoming her. Taerim marries a prime suspect in the murder (and was a witness that night) and it has changed her life in not so positive ways. Through Sanghui's eyes we can see the changes in Da-on.
It's a short, powerful book. I did throw together what I think is a solid answer to two of the books mysteries, but I'll keep it to my self.