Two super popular actresses, Natsumi Horiguchi and Marina Muranishi, appear for the first time in human considerations. The only mission for the two is "I want you to experience a virginity graduation that you will never forget". How will the two of them get rid of their first real virgin? "The desire to be fucked by a beautiful older sister" that everyone envisioned when they were virgins. Please consider this work carefully while remembering such things.