Outgrowing only girls, Overtake boys, Growth sound. Tennis Arc

Once, there was a girl who was mocked for her short stature and left in tears of frustration on the tennis court. Her name is now destined to become legend.
When the government secretly inserted a “sound that activates the human body” into a school’s broadcast system, the fate of one female student changed dramatically. With searing energy filling her body, she began to undergo astonishing growth with each passing day.

Once a small tennis club member, she had felt an inferiority complex at being towered over by a 160 cm male classmate, helplessly swinging her racket against his dominance. But perhaps due to the mysterious “growth sound,” within just a few days she caught up to his height—and then rapidly surpassed him. Not only her height, but her limbs, core strength, visual acuity, and even her chest and hips transformed at a breathtaking pace, evolving her tennis skills to levels beyond human understanding.

The boy who once looked down on her could only watch in shock, anxiety, and finally despair as the difference in size and power grew overwhelming. Her growth knew no end; she rose to reign as a colossal queen, her towering frame straddling the very court itself. Her sheer presence alone meant certain victory—her dominance undeniable. She exposed the truth: the growth sound only made girls grow.

From the one who was “looked down upon” to the one who “looks down,” and finally into the absolute “Queen”—her transformation embodied the joy of growth and the intoxicating thrill of total domination. And the growth of the girls had only just begun… This extraordinary tale of growth will lure you into a realm of excitement you’ve never experienced before!

Prologue: Inferiority and the Sign of Awakening (3 Days Before – Day 1)
Height: 140 cm. Looked down on by boys in the tennis club, the girl seethes with frustration at her smallness. Yet, a strange “sound” from the school broadcast begins filling her body with hot energy. An inner change takes root, hardening her vow to strike back.

Chapter 1: 150 cm! The First Signal of a Comeback (Day 3)
In just three days she reaches 150 cm. Realizing she no longer needs to crane her neck painfully to meet the boy’s gaze, she feels a rush of elation. “I’m no longer the one who’s meant to be looked down on,” she declares, secretly savoring his reaction.

Chapter 2: 160 cm! Standing as Equals (Day 6)
Another three days, and she reaches 160 cm—standing shoulder to shoulder with the boy. He cannot hide his unease at her sudden growth. Looking back on her past humiliation, she asks, “So, how does it feel now?” Her tennis movements, too, are already evolving beyond his.

Chapter 3: 170 cm! The Joy of Looking Down (Day 12)
Now 170 cm—“a full head taller” than him. Immersed in the superiority of no longer being his equal, she relishes her new vantage point. “This feeling… it’s the best! You’ll never look down on me again.”

Chapter 4: 180 cm! Amplified Abilities (Day 18)
At 180 cm, her growth shows no sign of stopping, and the boy is overwhelmed. She hints that her sharpened senses can even catch the sound of his anxious footfalls when he secretly compares their heights.

Chapter 5: 190 cm! A Body That Clears the Net (Day 25)
At 190 cm, she steps over the tennis net with ease, taunting him. His shorter legs could never imitate the feat. “Our leg length isn’t even in the same league,” she boasts, flaunting her overwhelming physical advantage.

Chapter 6: 200 cm! A Fully Gigantic Body (Day 30)
At 200 cm, her body is so massive that when the boy swings his racket upward, his arm brushes against her chest. She reveals that not only her height, but her chest, hips, and even hands have expanded monstrously—leaving him trembling in dread.

Chapter 7: 210 cm! Complete Victory on the Court (Day 40)
At 210 cm, she unleashes unbelievable speed and power on the court. “My eyesight’s sharper too… the ball looks like it’s standing still!” she laughs, returning his smashes with ease. “Sorry for outgrowing you by far more than all your daily practice could achieve ♡,” she teases, securing absolute victory.

Chapter 8: 230 cm! Overwhelming Domination (Day 50)
At 230 cm, she declares, “I’ll prove you can never beat me ♡.” Returning his fastest shots instantly, she displays the hopeless gap between them. It’s here that the shocking truth is revealed: the growth sound only empowers girls.

Final Chapter: 250 cm! The Queen’s Reign (Day 60)
She towers at an unfathomable 250 cm. Recalling how she once celebrated stepping over the net, now it’s a struggle just to sit atop it. Extending her legs, she easily straddles above his head—his view filled only with the space beneath her. Wielding her now massive chest, she smashes the ball in a playful “Breast Ball Smash,” sending him flying. “The gap’s so wide now that just standing here is enough to beat you ♡,” she declares, cementing her complete dominance. The story closes with the hint that the limitless growth of the girls has only begun.