Today when I was playing with Taku-chan and Kou-kun at the station, a very tall and naughty lady was walking by, so I followed her. My sister got on the train, so we got on the train too. The train was packed and we saw the lady's big butt right in front of us, and we were all excited. The older sister was angry, but for some reason she was writhing her body and making naughty noises, so we rolled up her skirt and exposed her panties. I played a lot on the lower half of the older sister's body, and her urine leaked out and made a mess. Then I took him to our secret base. The older sister did a lot of pleasant things for us at the secret base.
