After the Fever by Akira Yamamoto

6.20

Sanae, who went to prison after failing to kill her ex-boyfriend six years ago, meets Kenta, a forest ranger, and gets married. Sanae and Kenta's married life takes a new turn when the wife of Sanae's ex-boyfriend appears. Sanae still can't forget her ex-boyfriend, and Kenta is having a hard time dealing with her.