A full erection comes from the erotic breasts of my childhood friend who has grown more than I imagined! Both of our parents were away, and our younger childhood friend came to our house to stay overnight.

~Until then, he was just a childhood friend~ Noa, a childhood friend, has to stay at our house to go on a trip. She innocently says, "Let's go to the bath together!", but she has bigger breasts than I imagined, so I can't stand it! Noa also looked at my erect cock and became conscious of each other... Finally they are alone...The two of them can't stand it like this and become united! The two skip school and have sex overnight! And it's customary to have sex in the bath when their parents come home!