A virgin who was hungry for women for the first time goes to an otsumami bar and is ridiculed by the popular Tsubasa-san (88cm bust) and the new Uta-san (92cm bust), and even ejaculates before insertion... After that, he finally experiences his first insertion in the back hustle, and his hips can't stop because of the incredible pleasure!! The virgin who keeps pistoning even when the girl comes! From here, the great reversal drama of the amateur virgin begins... The spin-off work of the popular "rumored otsumami bar where you can have full sex" appears!!