A secret relationship to everyone - An I-cup busty female teacher and her male student go on a one-night, two-day hot spring trip where they can be alone and not be seen by anyone. - A male student's desire to have sex with his teacher grows, and his desire to have sex with him increases during the trip. - Even though they know it's naughty, they connect through raw penetration...The two of them end up cumming over and over again with unstoppable sexual desire even the next morning while they're staying at an inn. - A graphic and forbidden video record that was captured on a student's camera.