Guilty: Nakanu Hotaru ga Mi wo Kogasu

A 35-year-old woman named Sayaka has been married for a decade to a husband she considers ideal in nearly every way, aside from his lack of desire to have children. She struggles with the issue but avoids confronting him directly. To cope, she confides in her younger friend Rui at a bar they both frequent. Their bond allows them to share nearly everything, though Rui harbors a secret she cannot reveal to Sayaka.