A Shy Giantess

The afternoon sun beat down on Akari as she strolled through town, lost in thought about her upcoming exams. One moment, she was a normal schoolgirl, the next, a strange tingling sensation coursed through her body. Akari looked down in disbelief as her uniform tightened, her shoes stretched, and the buildings around her seemed to shrink. Panic swelled as she continued to grow, rapidly ascending until she towered above the bustling streets. Crimson flooded Akari's cheeks. She was a spectacle, a giant schoolgirl standing amongst tiny cars and ant-like people.
"Eek! What am I going to do?" she whispered, her voice a low rumble that stirred the air.
The only thought in her mind was getting home, away from prying eyes. Akari turned and began to lumber down the street, her footsteps shaking the ground. Her path, however, was blocked by a railway line, the silver tracks glinting in the sun. Just as she was considering how to navigate the obstacle, she heard the distant rumble of a train. Waiting impatiently, she stepped over the line and watched as the train, now the size of a toy, sped beneath her. A gust of wind, whipped up by the speeding train, caught her pleated skirt. The fabric billowed upwards, momentarily revealing a flash of cat-themed panties before Akari could react. Her face burned even brighter. Mortified beyond words, she quickly clutched her skirt down, her heart pounding like a drum.
"These were on sale! I-i promise!" she nervously said, as she quietly chuckled.
With a wave of emotions, Akari abandoned any attempt at subtlety. She turned and ran, her massive strides crushing several parked cars beneath her feet, leaving a trail of mangled metal and shattered glass in her wake. The only thing that mattered was escaping this nightmare and hiding away until, hopefully, she returned to her normal size. The stares, the whispers, and the accidental exposure were far more than she could bear.