Lucky Star: Kagami Hiiragi loses a bet to her sister and is told to hold her pee all day. By the time its night time shes held her pee for so long its recorded to show proof that she wet her panties. She tells you shes been holding it all day and her bladder is so full. Resisting to pee, and showing you in her anime eyes that she reallly has to go. She finally releases and it feels so good... The photoset is available in my store