Hajime is depressed because he was so bad at sex with his first girlfriend that he was scolded and they were on the verge of breaking up. Then his childhood friend Moka, a busty gal, comes over and offers words of encouragement: Shall I teach you how to massage breasts? Hajime accepts Moka's request for a sex how-to and lets her touch his breasts. When he puts Moka's breast massage instruction into practice, Moka starts letting out a sigh... He was going to help out, but it felt so good that he forgot about the how-to and took off his panties too. A nosy slut gal rescues his childhood friend with sex instruction