Hisako sat on her seat, letting out a long sigh. She browsed through her settings and set it so she doesn't automatically reject wireless file transfers. She set it that way by default since time to time an (embarassing) document with names like 'love letter.txt' will
suddenly be sent to her, without any identity of the sender; and that grossed her out.
She purged those bad thoughts out by shaking her head mildly. "I wish I was as smart as you are, Ai..." Hisako said, staring at her eye to eye.
Then, she thought about what she just said, "Hey, do you think someone can suddenly become good at something?" Hisako asked Ai, slightly facing away from her. "If, and just if, someone you know suddenly surpassed you in what you're good at, how would you feel?" The look on Hisako's face turned serious as the question reached Ai's ears.
Ai was a friend of hers, a very good one. She had always been fine being behind her a few steps, "It can't be helped, she was just more talented."
that was what she had always thought.
But now she had the power to surpass her, Acceleration. If it worked the way Hisako thought, than she will be able to cheat life itself, and obtain things that she otherwise would not be able to obtain. The power to accelerate, without a doubt, can be abused to surpass even the most talented people, who didn't have access to the power.
Besides, didn't her original plan screamed just that? By means of accelerating, she will win the upcoming tennis tournament, and use the money she obtained to help Akio's hospitalization funds.
Hisako knew that without Akio to constantly guide her, she will eventually use Acceleration without regard to others' feelings, that's just the way she was; spoiled and without remorse of what she had decided upon. That's why, before it was too late, she braved herself to ask Ai, albeit indirectly, on how she would feel.