Seiai fujin: Inmu ni mamirete

Overview:

Kazuma and his wife, Suzuko, run a guesthouse together. Suzuko's memory loss is gradually getting worse, and every time they have breakfast she asks Kazuma, "Who are you?" Suzuko has also become more flirtatious than before and is constantly seeking Kazuma out. One day, Kazuma's younger brother, Satoshi, is involved in an accident on his way to visit his brother.