My younger brother, who works as a researcher at a pharmaceutical company, has fulfilled his long-held dream of conducting research overseas and is scheduled to travel to Europe next month.Until his departure, my younger brother is staying at his older brother's and his wife's apartment.Hana, a chaste brother-in-law, spends her days supporting her brother-in-law with a gentle smile.However, one day, when she was alone with her younger brother while she was doing housework, she confessed, ``Actually, I've been in love with her older sister for a long time.'' 's brother's wife is at a loss for an answer...