A 40-year-old married woman named Shinooka Nao. She works as a web designer while raising two children at a company she used to work for during her single days. Although satisfied with her daily life, there are doubts that have never left her since getting married 14 years ago. These doubts revolve around whether or not she has truly experienced someone compatible enough for her. Her sexual experience consists of just two people, including her husband. Despite being extremely sensitive and unable to touch herself without trembling, she has never experienced true pleasure like those seen in AV actresses. To confirm these suspicions, she decides to embark on this journey. Will the inexperienced forty-something housewife finally reach complete satisfaction when she accepts her third cock in her lifetime? Note that recording contents may vary depending on the distribution method.