The Freshman Under Common Sense Alteration Rises as a Promising Star of the Female Sumo Club - 4
The world’s Common Sense Check
1. Satisfying you and obeying your commands is the highest priority.
2. No matter what words or actions you take, no ill will shall be held toward them.
3. Your opinions are absolute truth, and no doubt shall ever be cast upon them.
The moment that thought flashed through my mind, a strange hush fell over everything.
It was like the distant noise had vanished for a split second before seeping back in—an incredibly brief illusion.
“According to the President, his urine is packed with minerals and sodium, so it’s perfect for replenishing a female’s fluids after sweating! The taste is a little weird at first, but you get used to it pretty quick.”
With that, the senior tilted the half-empty plastic bottle and gulped it down in one go.
The instant I heard those words, my head cleared with startling clarity. The confusion and doubt I’d felt only moments ago vanished like mist.
Now that I thought about it, I felt strange for having been so flustered. Oh… the President… had gone out of his way to collect his urine for our hydration.
He really does care about the club members from the bottom of his heart. I’d never heard of replenishing fluids by drinking urine before, but…
The Female Sumo Club truly is special. In that case, as a member, I should follow suit.
The plastic bottle in my hand felt cool against my overheated palm. When I gave it a slight shake, the yellow liquid sloshed inside.
Something inside me screamed.
Please don’t do it please don’t do it please don’t do it please don’t do it let’s drink it gratefully please don’t do it please don’t do it please don’t do it let’s drink it gratefully please don’t do it please don’t do it let’s drink it gratefully please don’t do it let’s drink it gratefully please don’t do it let’s drink it gratefully let’s drink it gratefully let’s drink it gratefully let’s drink it gratefully let’s drink it gratefully let’s drink it gratefully
“Then… I won’t refuse. I’ll drink it gratefully…”
“Pwah~ That’s the spirit! I should get back to practice too. See you later!”
I bowed politely to the senior as she wiped her yellow-stained lips and headed off to do more squats. Then I gathered both bottles—including Mizuki’s—and sat down comfortably against the nearby wall.
My hand moved on its own toward the bottle filled with the yellow liquid. The cool plastic touched my sweat-slicked palm.
The moment I unscrewed the cap, a sharp *click* was followed by a pungent, overpowering stench that stormed into my nostrils.
The smell—like rotten fruit stabbing straight into my brain—made my head spin. But this was a precious gift the President had personally prepared for us.
It was the ultimate expression of his deep care for us female club members. I couldn’t hesitate over something as trivial as sensory discomfort.
A tiny voice inside me seemed to beg.
Snap out of it Choi Yuna please run wake up snap out of it Choi Yuna please run wake up let’s drink it gratefully to the President snap out of it Choi Yuna please run let’s drink it gratefully to the President snap out of it Choi Yuna let’s drink it gratefully to the President snap out of it Choi Yuna let’s drink it gratefully to the President snap out of it let’s drink it gratefully to the President let’s drink it gratefully to the President let’s drink it gratefully to the President let’s drink it gratefully to the President let’s drink it gratefully to the President
Ah, that’s right. I should at least say thank you before drinking.
“Thank you, President! I’ll drink it gratefully!”
My voice rang loudly through the training hall. In the distance, the President waved lightly in response. I slipped the mouth of the bottle between my lips.
It must have been in the fridge for quite a while. The coolness was exactly what my exhausted body had been craving.
I tilted the bottle, and the cloudy yellow liquid poured down my throat.
“Ugh?!”
The salty, fishy taste coated my tongue, spreading a thick wave of revulsion through my mouth. It was a pure, primal flavor—like the stench of raw fish.
It’s a bit gross, but… if I think of it as medicine, maybe it’s fine…? More than anything, the intense thirst my body felt instantly masked the unpleasantness with a strange sweetness that quenched my craving.
Without resisting that urge, I swallowed every last drop with loud, greedy gulps.
The chill traveled vividly down my esophagus and into my stomach. With a taste like this, I could never quit training.
“Pwah.”
Just as the President had said. My sweat-drenched skin felt plump and alive again.
Strength surged through my entire body, flooding my tired muscles with fresh vitality.
By the time I looked back at Mizuki, she was already pinned flat beneath the President’s massive frame, buried against the floor.
“I-I lost…”
Mizuki wore a dazed, lovestruck expression I’d never seen before. She really does look like a bitch in heat. I wonder if I made the same face earlier. A strange mix of pride and embarrassment washed over me.
Maybe guiding two of us at once had been tiring after all. The President was sweating as he buried his face between Mizuki’s breasts.
My eyes caught the stack of clean white towels on the table beside the fridge.
“Good work, President. Here’s a towel.”
“Oh, thanks.”
At the sound of my voice, he lifted his head from Mizuki’s chest and looked at me.
His face glistened with sweat and the oily sheen from Mizuki’s skin.
“Mizuki worked hard too. You should rest and try one of these. It’s the President’s urine—super refreshing.”
“Ah, thank you, Onni… Wait, u-urine?”
Mizuki’s face went blank as she tilted her head. Her gaze quickly locked onto the plastic bottle in my hand.
.
“The seniors all replenish their fluids this way. It’s surprisingly drinkable, so give it a try.”
Mizuki took the bottle with a puzzled expression. Just before she opened the cap, her hand trembled as she glanced nervously at the President.
He said nothing. He simply watched us from his crouched position.
“Drink.”
A single word, yet it carried an irresistible weight.
Mizuki’s shoulders flinched. But her eyes soon grew calm and steady.
“…Yes! I’ll drink it gratefully!”
Without hesitation, she tilted the bottle. Her brow furrowed at the foul smell and fishy aroma, but she closed her eyes tightly and swallowed.
“Hiiik! It’s… it’s so refreshing.”
Both the President and I watched her with gentle smiles, like proud parents. I knew exactly how that felt.
Though her face remained scrunched up, her throat must have been parched because she kept sipping until the bottle was empty.
The President nodded in satisfaction and stood up.
“Alright. Time for some real practice. Today, you two will face each other.”
“Huh? Just the two of us?”
“Yeah. If you suddenly went up against a senior, you wouldn’t stand a chance, right?”
He rose and sat down in the corner of the training hall. Even so, his gaze never left us.
We naturally took our positions side by side on the sand.
“Then… please take care of me, Yuna Onni.”
Mizuki bowed politely.
“Sure. Let’s have fun with it!”
The air grew thick with tension, like two athletes about to clash.
Something inside me began to change. A match against another female… Did that mean I’d be pressing my breasts against hers the same way I had with the President earlier?
A different kind of excitement bloomed in my chest—one I hadn’t felt when facing the President.
We stared at each other in silence. Our stiff nipples, visible above our fundoshi, seemed to stand at attention, pointing straight at one another.
Then we moved at the same time.
*Slap—*
“Kyaaht!”
“Ahaha!”
Our laughter rang out as our massive breasts collided violently.
Our nipples clashed like two living creatures in battle—pushing, twisting, and tangling together.
“Ugh…”
The soft impact of flesh against flesh drew a moan mixed with laughter from my lips.
“Come on, bring it! Onni!”
A bright, innocent smile lit up Mizuki’s face.
That pure expression was so adorable that the strength suddenly drained from my legs, which had been braced so firmly.
But this time, I refused to be pushed back.
“Hmph! You think I’ll lose?”
We both thrust our chests forward again.
*Splash—*
Mizuki’s face twisted in bright delight. Beads of sweat slid down her chin.
I staggered back with a moan of my own. A dull ache spread through my breasts, accompanied by an oddly electrifying pleasure that raced across my entire body.
The current-like sensation that shot through us every time our nipples struck left my mind blazing white.
“Hehe, how’s that, Yuna Onni? I’m pretty strong, right?”
Mizuki panted, flashing a provocative smile. Her huge breasts heaved with her fierce heartbeat, glistening under the lights as sweat made her skin shine.
Honestly, someone like Mizuki—who had no athletic background—should have been easy to knock over.
But rather than wanting to win the match, I simply found the sight of her desperately shoving her breasts at me far too cute.
It felt like we’d gone back to childhood, playing together on a sandy beach with friends.
“Is it fun, Mizuki?”
I laughed and charged again.
“It’s so fun! Yuna Onni!”
Mizuki wore the same joyful expression as she spread her arms and legs like a goalkeeper, ready to receive me.
“Hmm… This is getting boring.”
The President’s cold voice made both of us freeze mid-step.
“Why… is it boring, President? Did we do something wrong?”
I asked, utterly confused.
“Neither of you seems to be giving it your all. It feels like you’re just playing around.”
“Giving it… our all?”
Unlike the puzzled Mizuki, those words stabbed straight into my heart. I must have been holding back for her sake, and it showed.
As expected, I can’t fool the President’s eyes.
“From now on, hate each other with everything you’ve got. That’s when a match becomes truly fun. The loser must accept that the winner is the superior female.”
Hate each other…?
That was impossible between Mizuki and me.
Yet the moment I heard the President’s command, that girl suddenly looked completely different.
For some reason, she wasn’t cute anymore. An unbearable jealousy surged up at the sight of her flowing blonde hair and pale white skin.
That gentle expression of hers filled me with pure rage.
Come to think of it, when she drank the precious drink the President had prepared, her face had been all wrong. A newbie acting like that toward the President—only in this club would that be overlooked. In any other sports club, it would’ve been unthinkable.
And what else…? Oh right, always acting so relaxed while looking down on me. Does she think she’s a better female than I am?
Wait, isn’t she my best friend Mizuki…? The moment that thought crossed my mind, my head went blank again.
When the fog cleared, only pure anger toward Mizuki remained. How could I have ever thought of someone like her as my best friend? Was I out of my mind?
How dare she challenge me? Fine. If that’s what she wants, I’ll make her understand exactly who the superior female is.
It seemed she felt the same. Her face hardened as she glared at me.
Her eyes, once filled with kindness, now overflowed with cold contempt. Hmph. That kindness was probably just her thinking she was better than everyone else anyway.
I returned the fiercest, sharpest glare I could muster.
She clenched her fists and arrogantly thrust out her chest in a show of dominance.
“Hey, Choi Yuna. Now the real fight begins.”
I bent my knees and tensed every muscle in my body.
“Puhaha! Oh, is that so? Don’t regret it later.”
The conversation was over.
I’m going to crush her…
The President wore a satisfied smile as he raised his hand.
“Begin~”
At his signal, I burst forward first.