In class, she's serious and an honors student. Rena-chan, who would never imagine being involved in something like Enkou with an uncle, reveals her G-cup breasts the moment she takes off her uniform, a hidden busty student. Always studying, Rena-chan is a good girl both at home and at school. But in front of the uncle, she becomes embarrassed yet drenches her crotch repeatedly. The naughty records of plain-girl, hidden-busty Rena-chan and the uncle.
