By the Window 2022 one on netflix

Inagaki Goro plays a freelance writer married to his editor wife (Nakamura Yuri), who he discovers is having an affair with the popular novelist she is responsible for at work. Although troubled, he can’t bring himself to confront his wife. He later meets a high school novelist at a literary award ceremony, and–drawn to the award-winning book–he inquires about the model it’s based on, thinking he’d like to meet that person…