"Hey, do you think SEX feels good?" Yuka, who has reached an age sensitive to sex, asks her childhood friend Yu. Some people have already started their first experience, and somewhere they are overwhelmed by impatience... "Let's watch an AV today," unable to suppress her rising emotions, she watches sexual acts with her childhood friend. It feels hot in her crotch, and being in the same place feels very embarrassing. "Do you want to try the same thing...?" The first time seeing a sexual organ, awkward handjob and ejaculation. One by one, slowly heading towards their first sexual experience...