Duke is a character in Harvest Moon: Back To Nature. Duke and his wife, Manna, own and operate Aja Winery (also known as the "Orchard"). Duke tends to the Orchard and bottles the wine and juice. Manna sells the wine and grape juice, from their kitchen, between the hours of 9:00 am to 12:00 pm (everyday except Saturdays). Duke and Manna's daughter, Aja, left the village years ago. This caused him to become a heavy drinker.