Contrail ~ Tsumi to Koi (2016)

Aoki Aya is a lonely woman who lost her husband in a random murder six years ago. The son she was expecting at the time of the incident is now 5 years old. One day, she meets truck driver Osabe Ryoji at the drive-in where she works and falls in love with him. However, Ryoji, who abandoned everything including his job as a lawyer, was the perpetrator of her husband's murder six years ago.