The tall and beautiful sister Yui Oba drinks for the first time! Yui-chan, who is usually shy, said, "When you drink, you want to have sex!" Masturbating in the car like crazy, and I was surprised by the cock sticking out in front of me! The punishment games at the big party include anal licking, paizuri, and 4P! Relaxing Gonzo Sex Roll Up! It's a new work full of charm from Yui!