Fallen from the Top Group Due to Cheating and False Accusations. The Only One Who Stood by Me Was My Little Sister’s Best Friend, Who Had Always Adored Me.

Chapter 10: The Ex-Girlfriend’s Anxiety.

Karen’s POV.

On the night the video spread throughout the entire school, I had just finished my duties as the soccer club manager. In the now-silent boys’ changing room, Kayama-kun stole my lips.

His arm wrapped forcefully around my waist as his tongue intertwined with mine. The long, deep kiss drained my strength quickly, and I soon found myself struggling for air, letting out muffled “Nnh! Nnh!” sounds to beg him to stop.

Kayama-kun narrowed his eyes in annoyance and abruptly pushed me away.

“Tch. We were just getting to the good part. Hold it in a little longer, will you?”

“…Haa… Haa… Sorry… Haa…”

He clicked his tongue behind my back as I gasped for breath. I had known since we started this affair two months ago that, unlike the gentle Arata, Kayama-kun had a much rougher personality.

Two Months Earlier

It happened one evening near the end of winter. I had gone to the boys’ changing room after practice to drop off the freshly washed uniforms. Thinking everyone except Arata had already gone home, I entered without knocking.

There, sitting on a pipe chair and fiddling with his phone in his school uniform, was Kayama-kun.

Was he waiting for Arata?

The moment he saw me, he slipped his phone into his pocket.

“Oh, it’s you, Karen. Walking into the boys’ changing room without knocking? Don’t tell me you came to sniff Arata’s uniform or something?”

“No way. I’m not that much of a pervert.”

Since we had known each other since elementary school along with Arata, we were on fairly good terms. Unlike Arata’s soft, gentle impression, Kayama-kun had a cool and refreshing look, and he was quite popular among the girls. His soccer skills were second only to Arata’s among the soon-to-be second-years, and he was expected to form a powerful two-top forward line with Arata once they became third-years.

“Hey, Karen… How have things been with Arata lately?”

I had just put the basket of folded uniforms away and was about to leave when he suddenly called out from behind me.

“How…? I think things are going pretty well.”

Our soccer club had reached the finals of the winter prefectural tournament but lost, failing to advance to nationals. Because intense training for the summer would resume in spring, practice had been made optional for the month.

While most club members were enjoying their rare time off—going out after school or taking trips on weekends—a few first-years continued practicing without rest.

Deep down, I had wanted to go shopping with friends or take purikura photos with Arata at the game center like a normal high schooler. But since my boyfriend was training so hard for the summer, I felt guilty enjoying myself alone, so I kept coming to club activities.

Even if we couldn’t go on dates, just sharing a meat bun from the convenience store after practice or holding hands and feeling each other’s warmth was more than enough to fill my heart. Or so I had thought.

But once Arata started staying behind for solo training after practice, even those small moments alone disappeared. “Sorry, Karen! I’m staying a bit longer today. It’s getting late, so go home first,” he would say, and our precious time together vanished in the blink of an eye.

I had smiled and obeyed him. If only I had honestly told him back then, “I don’t like it. Can’t you value the time we spend together a little more?”—maybe things wouldn’t have turned out this way.

I had never told him because I didn’t want to be seen as a lewd girl, but I actually had a much stronger sex drive than most people. Deep down, I had wanted to become far more physically intimate with Arata.

And Kayama-kun had noticed that hidden desire.

“Huh. So of course you two are doing plenty of lover-like stuff, right?”

“…Well…”

“Hm?”

“…No. Arata seems to think it’s still too early for that kind of thing.”

The moment I answered, Kayama-kun’s gaze slowly traveled over my entire body as if licking every inch.

“…Heh. Yeah, that sounds just like him. Lately he only has eyes for soccer anyway.”

“Yeah… Well, I should get going.”

The moment I changed into my uniform and slung my backpack over my shoulder, he grabbed my arm.

“That guy’s an idiot. He has a girl as hot as a reader model right beside him and still hasn’t even slept with her. If it were me, I wouldn’t let you go for even a second every night.”

“Eh… Kayama-kun…?”

By then, it was already too late.

He pushed me half-forcibly against the edge of the room and slipped both hands under my uniform, groping my body freely.

“…Hey! Where are you touching…! Stop it!”

I resisted. But I knew it was pointless—after watching their brutal training up close every day, I understood how strong they were.

Kayama-kun used his entire body to pin me down and whispered into my ear:

“I can tell. Just by looking into your eyes, it’s obvious you’re not satisfied with your current life.”

“Let go… or I’ll tell the teacher—no, the police!”

“Go ahead. But then I’ll just say this: ‘She suddenly walked into the boys’ changing room without knocking while I was changing and seduced me.’ Who do you think the coach will believe?”

“…!”

“Besides, Karen, this isn’t a bad deal for you either, right? That face you made earlier was clearly complaining that you can’t release your sexual frustration with your boyfriend. You’re sexually frustrated, aren’t you…?”

“No… I’m not like that…”

“So it’s perfect, isn’t it? I get to enjoy you however I want, and you get to satisfy your desires. It’s mutually beneficial.”

“No… That’s not…”

I wouldn’t be able to face Arata anymore.

Yet Kayama-kun’s grip only grew stronger. In contrast, my resistance was pathetically weak and fragile.

Eventually, I reached my limit. While Arata was earnestly practicing nearby, I had my first time—something that should have belonged to Arata—ruthlessly stolen from me.

What was even worse was that my body became addicted to his intense acts.

Emotions aside, the body doesn’t lie.

As if making up for all the pent-up frustration, my entire body began craving Kayama-kun.

Before long, I could no longer feel pleasure without him.

Present

“Alright, stand up already, Karen. We’re continuing.”

He unbuckled his belt and, as I knelt on the floor, casually pulled down his pants right in front of my eyes.

So we were doing it here again today.

Through the gap in the window, I could faintly see the school field. Arata was no longer there. This scene was one I had created myself, yet why did my chest ache so painfully?

In the dimly lit changing room, he continued to ravish me for hours afterward.

Was this really the right choice…?

The Next Morning

The morning after such intense activity always left my body utterly exhausted.

Bearing the lead-like heaviness weighing down my entire body, I headed to school alone.

Of course, Arata—who used to come all the way to the apartment entrance every morning to pick me up—was nowhere to be seen. Feeling anxious, I began walking by myself.

After everything that had happened, Arata probably wouldn’t come to school anymore—.

I had been half-convinced of that when I suddenly caught sight of something that made me doubt my eyes.

Just before reaching school, I spotted Arata’s back as he walked to class.

But that wasn’t the only shocking part.

Walking right beside him, smiling cheerfully in his direction, was a girl with her hair in twin side-tails.

Who on earth was she…?

Faced with the unbelievable sight, I felt as if I had been struck in the head with a blunt weapon.