"Hey, does sex feel good..." Yuka, who has reached a sexually sensitive age, asks her childhood friend Yu. Some people have already had their first experience, and she feels a sense of impatience... "Let's have an adult video viewing party today." Unable to contain her rising emotions, she watches sexual acts with her childhood friend. Her groin gets hot, and she begins to feel very embarrassed to be in the same place. "Shall we do the same...?" Genitals that she sees for the first time, awkward handjob and ejaculation. One by one, the two slowly move towards their first sexual experiences...