Chapter 31: Masumi’s Story

Masumi’s Story

“Kotaka-san, this might be difficult to talk about, but may I ask what happened to your brother?”

When Kisaragi-senpai asked me that, I once again recalled the incident that changed my brother.

“Understood. I’m sure Kisaragi-senpai would understand my brother’s pain. That might be why my brother wanted to thank you.”

Saying that, I decided to tell Senpai what had happened to my brother.

My brother is two years older than me, smart enough to attend a prestigious school, and if he ever pushed up his shaggy bangs, he’d actually be a fairly good-looking guy—a hidden trait he possesses.

The first person to notice what a great catch he was wasn’t me, but a girl who used to be my friend. I won’t mention her real name, so let’s just call her Kuzumi. It all started when Kuzumi came over to my house to hang out. The moment she set her sights on my brother… If I could redo the past, I would never have become friends with someone like her.

But no matter what, the past can’t be changed. Kuzumi gradually got closer to my brother, and before I knew it, she had secured the position of his girlfriend.

I felt like my beloved brother had been stolen from me. It was a shock. Even so, as long as my brother smiled happily, I could endure it.

And yet Kuzumi—that woman—despite having taken what I longed for most, betrayed my brother so easily.

The first sign of her betrayal came when a friend asked me, “Did Masumi’s brother and Kuzumi break up?”

Seeing my shocked expression, my friend realized her mistake and hesitated, but after I pressed her, she admitted she had seen Kuzumi walking hand in hand with a guy she didn’t recognize, looking quite happy.

Before my brother could find out, I called that woman over and confronted her. She was surprised at first but quickly gave me a flimsy excuse—“He’s my cousin”—which I now realize was utterly pathetic.

But back then, I believed her. After all, I sometimes held hands with my brother too. So I thought maybe cousins could do that as well… Looking back, I was such a fool.

Not long after that, Kuzumi’s behavior became even more suspicious. She used to visit our house frequently to see my brother after school, but suddenly, she hardly came over. She had always gone on dates with my brother every weekend, but now, she frequently canceled, claiming she was busy.

By that point, even my brother began to sense something was wrong. He often looked troubled.

I couldn’t stand seeing my brother like that, so I confronted that woman once more.

And then she had the nerve to cry as she confessed she had fallen for someone else. When I pressed her—no, when I threatened her—she admitted she was already in a relationship with that man.

To me, the idea of loving anyone other than my brother was unthinkable. But I knew that, in the real world, people sometimes fall for someone else even while in a relationship.

In that case, she should have broken up with my brother right away. So why didn’t she?

I can only guess, but at first, it was probably just a casual fling to her—curiosity, excitement, or some shallow reason. But she wasn’t serious enough to break up with my brother over it.

However, at some point, her fling became more important to her than my brother—to the point that they became physically involved.

Isn’t that unforgivable? She was dating my brother, yet she cheated on him. While pretending nothing was wrong, she was secretly betraying him.

She treated my brother like a backup while two-timing him. My incredibly smart, kind, and cool brother… She’s truly the worst kind of woman.

But the most disgusting part? She actually had the nerve to ask me to break the news to my brother for her.

Unbelievable, right? Instead of breaking up before cheating, she strung him along, and when she was caught, she wanted someone else to clean up her mess. Kuzumi was such an incompetent person, less than a kindergartner, who couldn’t even wipe her own a🬀s.

And when I fully realized that my brother had been taken by someone like her… I snapped and punched her with all my strength. I knew hitting her face would be bad, so I aimed for her stomach with everything I had.

She let out a pathetic “Bweh!” and doubled over in pain. Normally, I would have followed up with a knee strike to finish the job, but being the reasonable person I am, I settled for spitting on her instead.

Kuzumi clearly never expected someone as quiet as me to do something like that. She looked up at me with the wide-eyed terror of a trembling Chihuahua.

And to that shaking Kuzumi, I said this: “Confess everything to my brother. Own up to your sins and break up with him properly.”

In hindsight, it was foolish of me not to give explicit instructions to that brainless trash, Kuzumi.

She went ahead and confessed everything to my brother—every single detail—without a shred of consideration. She even told him things he never needed to hear, like what she did with that man, which positions felt best, and how he compared to my brother.

A painfully vivid report of her infidelity. Though I never intended for things to go that far, it broke my brother completely.

That’s why I swore to take revenge on her and that man—to atone for my mistake.

First, my revenge on Kuzumi. That was the easy part.

After breaking up with my brother, the man she cheated with dumped her too. That alone was satisfying, but for some reason, she pretended to be depressed because she broke up with my brother.

Can you believe it? Despite betraying him, she tried to shift the blame for her misery onto my brother. That made me hate her even more.

At the time, I had just finished punishing a womanizing sc🬀🬀🬀ag for harassing a friend. Instead of finishing him off, I made him seduce Kuzumi as part of his redemption.

I had no doubt she would fall for it. And sure enough, the plan worked perfectly. Vulnerable and lonely, she latched onto the smooth-talking sc🬀🬀🬀ag.

From there, she spiraled downward. He cheated on her, beat her, and eventually left her pregnant and abandoned. She failed her high school entrance exams, and I have no idea what happened to her after that.

Next, my real target—Kashiwagi Yuito. I began plotting my revenge against him.

At first, my plan was simple—just land a solid punch… no, a full-force hit on him in my brother’s place. But for some reason, I kept running into bad luck. People kept getting in the way, and I couldn’t get close to him. So, I had no choice but to observe him from a distance. That’s when I discovered he had done the same thing over and over again. And worse, I realized that no matter how many times I punched him, nothing would ever change.

That only made me angrier. I wanted to make him understand—truly understand—so I changed my plans and transferred to the same school as him.

Originally, I had planned to go to the same school as my brother, but after he shut himself away, there was no longer any reason to.

From that moment on, I watched and waited for the perfect chance to get my revenge.

Then, as if by divine revelation, I happened to overhear Kisaragi-senpai and Takato-san talking. Just as I was thinking about asking them to let me join in, that b🬀🬀tard finally got what was coming to him.

You two were incredible—swift and decisive in delivering justice.

To be honest, a part of me wanted to be the one to take him down.

That’s why I wanted to thank you—both for what you did and for the revenge I couldn’t get myself.

When I finished telling my story, Senpai looked surprised. But in his eyes, I saw something that reminded me of a curious young boy.