earthquake bolts

A large grin then appeared on her face as if the stress in her body was gushing out.
An eerie sparking noise came from her silky bangs.
Misaka Mikoto took in a deep, deep breath.
And then she helped them gather some data.
She went pretty much all out.
“That damn idiot!! What! Does! He! Think! A! Promise! Is!? And after I worked so hard
checking the scores after every event during the Daihaseisai!!”
With a great crackling roar, the arcade machine using a power measurement device
rocked back and forth. It was built to withstand a fair amount of shock, but this had
been enough to rip up the earthquake-resistant bolts holding the machine to the ground.
It began letting out a silly-sounding alarm. The gentle atmosphere of the underground
mall underwent a sudden change. The students walking around began yelling
“Ugyahh!?”, “Wh-what was that!?”, and “Wait, wait up!!” as they began running away.
After venting all of her feelings at the machine, Mikoto panted with her shoulders
moving up and down.