A nephew falls in love with his busty aunt Mio, who has an amazing figure. He decides to dedicate his virginity to Mio. He has never had a girlfriend until now. Mio teases his nephew, who has no interest in women. There is no way that a virgin can resist an erection when Mio caresses him caressing him defenselessly... "You've made it so hard... I'll take responsibility." A memorable first sex experience with his first love, the aunt, begins!