OBA-200 The allure of the housekeeper's panty flash by Tsutsui Kaede

His father, who is on an overseas assignment leaving his son Ken alone, has been worried about Ken's efforts to train without eating since it was decided that Ken would appear on a program called Muscle Champ. Therefore, he decided to ask for a housekeeper, and Kaede came. Ken was still immersed in muscle training even when Kaede came, but no matter how much he trained, he was worried that he couldn't do his abs. One day, Ken happened to see Kaede's panties while doing housework.