The niece's growing adult-like body caused her uncle and son to inevitably achieve full erections. (Yuki Serizawa GVG-117)

The uncle brought his son to visit his brother and reunite with his niece, "Qin," whom he hadn't seen for several years. After the reunion, the uncle, as usual, called his son and niece into the bathroom to take a bath. However, when the uncle saw his niece's well-developed breasts, his eyes were glued to them...