HHED-065 Nephew gets an erection when he sees his aunt taking a bath Shiori Akagawa

Kenji and his aunt Shiori end up going on a hot spring trip together. Kenji has forbidden feelings for Shiori and pretends to be calm so that she doesn't realize he is excited. However, he can't control his desire and peeks at Shiori taking a bath... There he sees Shiori masturbating in the bathtub, looking lonely. Kenji's reason is shaken by her seductive appearance.