My sister Umi has I-cup explosive breasts and a dynamite body. After receiving sex education in school, Umi is extremely curious about SEX. She comes into the bath or strips in front of me, always trying to seduce me at any opportunity. However, my rationality can't hold out for long… Umi's curiosity about sex has become too intense, and she finally ends up having a relationship with one of my friends.
※There are no performers under the age of 18 in this work.
