The Gravity of the Situation

Reward for TFLoving, an addition to the Spell Saga Set, starring Ochako from Boku no Hero Academia
 

There is a story written by TFLoving that goes with this pic, which you can read here right below, it is also a continuation of the story you can find here
 

Ochako picked up the now miniature Momo and looked around. Surely Momo  must be somewhere. She thought this girl she was holding must be the  heroine’s sister, not even realising that she was the very person she  now looked for. It didn’t help that Momo’s own mind was hazy and she  didn’t even seem to see what was impossible about her being the younger  sister of someone with the same name who looked like her.
Meanwhile in the crowd, the mysterious woman tried to cover her face.  Drat! That girl holding the girl she’d regressed could get her in  trouble if they alerted the teachers. Her quirk, like others, was  registered and it wouldn’t take them long to track her down once they  realised what happened…
 

What could she do? She couldn’t get down to the floor of the Arena and  take the kid away herself. What could she do? Unless… Surely it wouldn’t  work so well twice would it?
 

As Ochako hurried towards the teacher’s area, she felt a strange  tingling throughout her body. She wondered if it was a result of the  race they had just run, after all it had been very intense. She felt  some slack in her suit and wondered if she’d managed to sweat off some  weight or something. Why else would her suit have suddenly gotten  looser.
The arena certainly looked a lot bigger once you stood in it. Ochako  felt like it had gotten bigger even in the last couple of minutes! How  excited she was though to be able to compete here. One day she was going  to be a big hero! She’d dreamt of such a goal since she was a little  girl. By now that must have been 3, 4 years? Ochako put down Momo as she  thought for a moment, finding that the girl didn’t seem as short as she  had been when she had picked her up. Surely though, it must have been  longer than 3 or 4 years since she was a little girl. And why did her  suit feel so loose? The sleeves now came down her arms and covered her  hands. She looked down to Momo who was watching in fascination, but not  alarm.
 

Wait… She was shrinking… and that girl in front of her… that was so small…
 

“Momo?” she gasped with surprise, almost gasping again as she realised  how childish her voice now sounded. Momo looked back innocently. “Uh  huh, dats me!” she proclaimed happily, bouncing her feet on the grass.
Ochako giggled despite herself. She put her hand on her chest as she  laughed, momentarily forgetting her own quirk as she suddenly fell back  stopping before she hit the ground as she found herself floating.
Her mind’s changes now catching up with her body, her eyes now widened  in surprise. How was she floating? Could she fly? And who was that nice  girl sitting next to her? The girl next to her toddled to her feet and  held onto part of her baggy clothing as if to stop her floating away.
 

Both little girls looked in awe, as at Momo’s touch, Ochako’s clothes  morphed into a more fitting size that now included a thick diaper that  would also prevent any nasty bruises if Ochako’s floating suddenly  stopped at any time. Looking at each other, the girl’s actually looked  quite excited. They both were quite sure they’d made a new friend and  they were so excited to play together. What were all these people here  for though? Neither could remember, and frankly…
 

neither of them cared.