Contrary to normally, where waking up was the worst part of the day, today you were excited. You were excited to see the result, if it worked, how everything changed. You felt smaller and lighter, a promising start. You noticed that your diaper was heavier than before; bigger but also loaded. Opening your eyes, you noticed that your room was more childish. There were more toys and nothing to remind you of your old room. The computer was gone and the tv also. A toy box replaced one and a lego set the other. Naturally, there were no trophies or portraits of you at 16. They all were replaced by photographs of you younger and also posters of superheroes.
You stood up and went to change your clothes; memories were forming themselves. You remembered that because of your "handicap" you had to learn to change yourself, clean yourself. It was a chore but funny and somehow arousing even if you physically didn't hit puberty yet. You youthened physically but your mental age didn't change. After putting on city clothes, you realized that the diapers were obvious, they could not be hidden.
You went out of your room to eat breakfast. When eating, you had a look around the room. You noticed two sets of bedwetting calendars, one paired with a "day wetting" calendar. Your brother was wetting at least 5 days a week, you were wetting every day. Your parents were hoping you would catch up but had already known that was impossible. Your brother was already wearing normal underwear during the day for at least a year at your age; you were not near to be able to go without them. But unlike your brother, you were an academic genius, compensating for your handicap well. You got the attention because you were the youngest but also because you were the one with the most potential. Your brother was not as favored but he was not neglected. He had started to play soccer and had more success than normal.
But recently, you had also taken up interest in sports, but you were hesitating to continue or not.