Although you were reluctant, you agreed to her request. You said, "well, I agree, as long as you promise not to make fun of me about it." Sara agreed to your request, so you left your seat, squatted on the ground and began to push. Soon you can feel some paste entering your swimming diaper. You can feel the paste pressed on your ass by the diaper. Soon you finished pushing. At this time, Sarah checked you in time and announced that you had an accident. Grace, who is putting on her swimsuit again with the help of her mother, looks at you in surprise. You just blush, but this time Sara keeps her promise and doesn't make fun of you. She just decides to change it for you immediately.
She asked you to take off your bathing suit now. When you realized that you needed to be naked to take off your swimming diaper, you were a little scared, but you decided to let grace see your change process, which would make her feel better. You quickly take off your one-piece swimsuit, leaving only your lower body hanging swimming diapers. Sara asks you to lie on the bench, open your diapers and start cleaning them with wet wipes. It's a new shame to be out changing diapers like a baby by your sister. You can only cover your face and don't look at others nearby.
Although you are very messy, Sara patiently cleaned it up for you. After disposing of the used swimming diapers, Sara realized that they had no supply, so she turned to Amy for help. Amy took out the last swimming diaper she had prepared for grace, but she said, "this is the last one. If you have another accident, we have to go back." Sara thanked Amy, then helped you put on your new swimming diaper, and then motioned you and grace to play first. She wanted to go to the bathroom by herself.
You and grace continue to play in the pool, but you notice that Sarah doesn't seem to be back for a long time, so you ask Amy. Amy asks you to take care of grace temporarily. She goes to the toilet to look for it. When Amy got to the toilet, she didn't see Sarah in the toilet, but she heard a cry in a compartment. She walked over and realized that Sarah was crying in it. She found the door unlocked, so she opened it and looked inside, but she saw…