Riona-chan, a blonde gal who was invited to a friend's home party. As soon as the party started, she guzzled down champagne and was in a good mood, but her liquor was loaded with aphrodisiacs. Her erotic switch is ON even though she gradually begins to faint. Riona-chan, who changes into the erotic costume that men demand and is turned around in high spirits, feels so good that the whites of her eyes are peeled off!
