Under the supervision of Kyle, Mallory could practice her quirk on larger objects. In one of the training halls, Kyle handed her a ball, right after making it cold to the touch.
"Now now, to test your quirk, try to make the ball warmer, then increase it's weight." The older boy told her.
"Okay, here goes. Warmer. Warmer. WarMER! She screamed as she dropped the ball, raising it's temperature to dangerous levels. "Ow. Ow. Ow. It hurts!" She cried, looking at her brother's feet again.
Thinking fast, Kyle took another ball and lowered its temperature using his quirk and attempted to hand it to Mallory. But he was too slow. Someone already beat him to the punch.
"Oh my goodness! M.J." A short girl, just a few minutes younger than Kyle, said as she warped into the the room with her quirk, Hex, which allows her to manipulate the location of people and objects around her, grabbing the ball from him and hoisting it into the younger girls hand. "Here, squeeze."
"Hey! Alice! I had that covered. You don't have to steal the spotlight like that." Kyle said, a hint of frustration in his voice. 'sigh' "Thanks anyways lil sis"
"Hey! I'm only 13 minutes younger than you! We're practically the same age!" She rebutted, focusing back on Mallory.
"Big sis Alice. Look, I'm all better already." The little girl said, beaming up at her older sister, thankful that she showed up.
"If you two are done, I want to grab a snack. Keep an eye on M.J. Would ya?" Kyle said, while he walked to the kitchen.
"Alright, see you later bro." Alice said, waving at her twin, knowing that she likely wouldn't see him again that day, considering the size of their home. Their parents were multimillionaires, so of course they lived in luxury.