Damian, the old bus driver, was a fan of mangas and Japanese animation, especially the ones about magical girls.
Being part of a Magical Girl story? That was a dream come true for him. Sure, he never imagined he would have to become one, in fact, he never imagined said dream COULD become true. But honestly? Being young again certainly wasn't an inconvenience to him, and changing gender was only a minor one.
So when the magical girl that welcomed the kids said she would magically send him away, making him forget everything that happened, he instantly shouted "WAIT!!!" before asking "Can't I become a Magical Girl too?"
"You realize that not only will you be a kid again, but you will also become a girl, right?"
"Of course I do! And while I could do without the ‘becoming a girl’ part, if it's the price to pay, so be it!"
"What's your name, old man?"
"Damian, but since I'm going to be a girl, I'm thinking of changing it into Debora. What do you think?" Then, our bus driver realized how hight pitched was her new voice, and that she now was the same height as her interlocutor, if not a bit smaller. Hugging her senior Magical Girl, she screamed "THANKYOU!THANKYOU!THANKYOU!"