The young wife is apprentice of both sex and housework! Kazuka HAYASE

Hiroki was taken care of by his older brother, Kishi's house while he was in restructuring. The house had a beautiful older brother and wife, Kazuka, who was incompetent with her arrogant elder brother, and Hiroki wondered whether she married Kishi. Wako had never been involved with a man other than Kishi, and she was innocent because she couldn't be successful in sexual life with Kishi without being arrogant. It's a waste to have a beautiful body and be full of charm. Hiroki thought so, but instead of his brother, he taught Wako how to apologize for her sex.