FERA-119 Girly extreme sex with mom, only allowing insertion of the tip

"I'm fine with just the tip! Please!" After she was witnessed masturbating, her son demanded various erotic acts as a hush money, and she reluctantly accepted Aika, but she refused to insert her. Only the line that should not be crossed as a parent and child must be defended. That was Aika's kindness. However, her hot-blooded son was not convinced and offered a compromise, saying that she should be allowed to insert even just 3 cm of her tip.