Takeshi is left in charge of his parents while they are away on a trip. - My mother's friend, Yuuka, will take care of dinner for me. - When Yuka comes to the house, she is beautiful for her age, and Takeru falls in love with her at first sight. - Yuka was originally planning to go home after preparing dinner, but due to Takeshi's trick of pretending to be sick, she ends up staying at his house for just one night.