In place of his father for work, Yoshikazu went on a hot spring trip with his mother and relatives. Unable to take his eyes off the unconscious eroticism of his aunt Mariko, whom he hadn't seen in a while… He was caught by Mariko while he was in distress. Marikou, captivated by his sturdy cock, couldn't satisfy her daily lust with just her husband. After she introduced him to the pleasures of sex, Ryohwa went at her like a monkey in heat, and in response, Marikou lost herself, wildly thrusting her hips...
