Mother's best friend

Rika, my mother's best friend, comes to play. Kotaro ends up talking to Riruka while her mother prepares for the drinking party. Her beauty, her chest, which carries deep cleavage, and her long, slender arms and legs... Kotaro was desperately trying not to be taken over by the calm adult sex appeal, but finally he couldn't hold it in and ended up fantasizing about Rika as the material for the masturbation. Furthermore, Riruka looks upon her completely erect penis...