A woman with two little kids. A toddler girl with strawberry blond hair, and probably a five year old boy with short brown hair. The Game Master asked "So what brings you to my humble store today mam?"
The assumed mother of the kids asked "My kids have been a bit more of brats right now. Over the years they may mature, but i'm my wits end. Is there a way you could make them more mature?"
The Game Master nodded his head and said "Sure, plenty of ways. Could simply give them a potion... although they can be a bit bitter." looking at the kids he said "Another solution may be a simple game. Kind of like the game of life, except magic and using dice instead of some spinner. Since this game is for the kids i'm guessing you'll be sitting this one out?"
The mother nodded and said "Come on Tessa, John we're going to play a game."
Two chairs materialized along with a game board, two dice, and two game pieces on The Game Master's desk. The kids interested went to the same chair and bickered for a bit before their mom just picked up Tessa and put her in a different chair. The Game Master put the two game pieces on the board, one pink one blue, and looking at the board it simply looked like a black board with a bunch of white circles in a simple loop design. There was what looked like a crystal ball in the middle though. A third chair appeared and The Game Master said "May as well take a seat mam, get nice and comfortable." The mother sat down and then took a nap. You looked to the Game Master who had a smile. The Game Master said "Well the game is simple. You roll the dice, move to a spot, and then the crystal ball will tell you what'll happen. Ladies first?"
John looked a little annoyed that he didn't go first but Tessa rolled the two dice and rolled snake eyes. John chuckled at the bad roll then the Crystal Ball talked and said "Two dots on a dice, two nipples on a chest, maturity is what you wish then let your chest mature first." Tessa was confused and then put her hands on her chest. You figured out what was going on and saw her hands get pushed slightly by budding breasts. They however continued to grow until they reached C-cups which were large enough to push their way under and out of her small shirt. They looked strange on a small toddler, but they seemed to be the same size as her mother's breasts.
John said "Woah! Like moms..." he then grabbed the dice and rolled a 6. The crystal ball said "You see something nice and big, but have little understanding of them. Mature and gain more understanding." John then stared in space for a few seconds and then when he glanced back to his sister he blushed a bit and averted his eyes.
The game then continued Tessa's body kept developing as John's mind kept developing. Seeing what was going on you had gone to the back and got out some clothes out of the "Spare Clothes" bin you had seen in the past. underwear , a medium sized T-shirt, and a skirt. When you had gotten back you saw a Teenage girl about your age almost naked and a little boy who said "I'm done... What's the point in this anyways?"
The Game Master said "Ah my help, why don't you help the young lady here into her clothes."
You said "Yes, Tessa was it? We have a changing room in the back. Let me show you the way." You brought the girl to the back. Your male form must've been effecting your thoughts because your dick felt a little still being nearby the nearly naked girl. You left the clothes in the changing room and said "Try putting on your underwear first. If you need help I can be of assistance."
After a minute the girl asked "Um... Sir? Could you help me with this thing... i'm supposed to put it over my chest right?" The girl opened the door and you walked in to see the girl struggling to get the bra on. You helped her put it on and you couldn't help but feel this was a little weird. If only you weren't in your butler costume. After the ordeal of getting her dressed. You walked her out to the front where her mother was waking up.
The Game Master said "Well your son looks like he learned a lot, and there's your daughter."
The mother looked and said "Aw she's pretty! Come on let's get you two back home." Then the family left.
You sighed and said "Would you have been angry if I changed back to my female form while helping out Tessa?"
The Game Master said "Of course, your on the clock and you should be in your uniform. Regardless it's more fun this way."
"What do you mean by that?" You pondered
The Game Master said "Well just help me with the next customers and you can leave for the day." The next customers were different but really the same. Some kid also blooming into an adult, a couple whose sex life got stale and ended up switching genders, and a few others. At home you managed to hide your tail from your mom again and everything went about as well as always. When you came back however...