C29 Bathroom infatuation

When I picked up the Sis Plum, I don't know if she became lighter or heavier, but when I said that I felt that she became lighter, she actually gasped and struggled when she hugged me, going up and down with me, saying that she wasn't lighter, she was even fatter! It was September, and the two of them were naked against each other, moving rhythmically, warm and light, like September's autumn