Only I know... Secret guide with my friend's mother

Manabu, a single-parent family, secretly admired his friend's mother, Yuka. And before long, the feelings turn to love... At that time, Manabu felt a sexual awakening from the lewd behavior he accidentally witnessed, but he was in agony because he didn't know how to let go of it. When Yuka learns of his worries, he secretly explains to her... Then, Manabu, who can't control his rationality at the stimulation he feels for the first time, attacks her. Yuka continues to cum by his cock, which is rampant like a beast, but she can't hold back...