It's a Chastity-Reversed World, But It's Different From What I Imagined? - 5

Chapter 5: Little Sister’s POV: Big Brother’s Defense Line

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【Tsuki Kurose】

I took action immediately. I brought my concerns to Yuuna Aoyanagi, my childhood friend and sister-like figure. She wasn’t in the same class as my brother, but since she attended the same middle school, I thought I could get her to cooperate.

“Yuu-nee, you don’t understand just how endlessly cool Onii is!”

I went to Yuu-nee’s house and spoke at length about how wonderful my brother was. Tomorrow was a day off, so the two of us were having a pajama party. After listening to my talk, Yuu-nee said…

“I know! I know, Tsuki-chan. Yoru is insane! You know what’s insane? Having that kind of sex appeal in middle school! A mature face. A body trained since elementary school and because he’s bad at talking, he gives off this taciturn and cool vibe. Everything about him is downright erotic!”

When two adolescent girls started talking about a boy they were close to, it naturally turned out like this. And since this was my brother we were talking about, of course we ended up talking like this. We nodded in agreement over and over.

“Now that he’s in middle school, he looks even more mature, doesn’t he? Since I’m his childhood friend, the kids around me keep telling me to introduce them to him every single day.”

So consulting Yuu-nee about my brother had been the right decision after all. She acted as a breakwater against all those girls asking for introductions.

“The girls in his class still haven’t spoken to Onii yet, right?”

I reported the information I had gathered during my infiltration to Yuu-nee.

“Ah—that. That’s because during Yoru’s self-introduction, he was too embarrassed to say anything. He just mumbled his name and sat down. Because of that, the girls in his class now treat him like some untouchable, sacred being, due to his looks and his quiet demeanor.”

Just imagining my brother being shy during his self-introduction made me think he was adorable. But at the same time, I felt such jealousy that I wanted to gouge out the eyes of the classmates who had witnessed that scene.

As for the boys in the class, they saw his composed demeanor and figured he was a completely different existence than them, making it hard for them to approach him.

“I knew it. When I infiltrated, I saw a few girls looking shyly at Onii. So that means…”

Convinced that my guess had been correct, I proposed a method to protect my brother to Yuu-nee.

“You’re going to tell Yoru that he’s gross?”

“Yes. Since Onii isn’t good at talking, he doesn’t really get information from others, right?

So if I tell him, ‘You’re gross, that’s why the girls avoid you, so you shouldn’t talk to them,’ then it’ll work.”

It should be enough even if only I called him gross. But even if he didn’t initiate, if girls tried to talk to him, the plan could collapse. That was why I wanted Yuu-nee to secretly establish a ‘don’t talk to Onii agreement’ between the girls. We would build up an idolized image of my brother as an untouchable, high-born flower. That way we could keep other girls away from him.

“I see… Tsuki-chan, you’re a genius! If we do that, it means only you and I get to have Yoru all to ourselves!”

I couldn’t protect my brother alone. But since Yuu-nee had always been with me since childhood, I didn’t mind sharing him with her.

“When I enter the school next year, I’ll help too.”

“Alright, I’ll take care of things until then.”

The two of us decided to set up a defensive line to protect my brother. As soon as I entered middle school, I joined the student council and secured power. Yuu-nee, meanwhile, had such outstanding results that she won the national swimming competition even as a first-year. She used her connections in the athletics clubs to keep the girls away from my brother for a year.

And so, until my brother graduated….We protected him together.

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By the winter of his third year, I had thought my brother would become dependent on us since he hadn’t made any friends in middle school. But instead, he grew even worse at talking to us as well, withdrawing more into his own world.

But then, in the winter of his third year. After his entrance exams were over, maybe because the pressure was gone, my brother returned home and said for the first time in a long while.

“Um, Tsu-Tsuki. I-I’m home.”

I was shocked—I hadn’t heard my brother’s voice in over a year.

“Eh? Onii? W-welcome back…”

I was so surprised I stumbled over my words too.

“Stuttering like that is seriously gross.”

Flustered, I blurted out “gross” without meaning to. But what was said couldn’t be unsaid. To follow through with the plan, I told Yuu-nee that Onii had spoken to me for the first time in a while.

Since he didn’t have to attend school anymore, he had brightened up a little. He had been holed up in his room before, but now he started jogging and working out again. Apparently, he had been exercising in his room all along, since his body was still toned.

Seeing my brother grow brighter again made me anxious. If this continued, another girl might take him away. So I asked Yuu-nee and even Mother to call him gross as well. When they did, he made such a sad face, and once again spoke less and less. I felt guilty, but kept telling myself it was to protect him.

My brother’s graduation ceremony. As student council president, I gave the farewell speech on behalf of the underclassmen to send off my brother and Yuu-nee. After the ceremony, I quickly wrapped up the cleanup with the student council members and the others who had helped, then headed to the schoolyard to join my brother.

There, his classmates and teachers were taking group photos with him. The classmates were shedding tears of joy because they had never gotten to take a photo with him before. My brother also looked happy, so I couldn’t bring myself to ruin those memories of his middle school days.

“Onii, let’s go home.”

I called out to him after the photos, when he was standing alone. He gave a thoughtful gesture, then reached out and began patting my head.

“Wha—! H-hey! Don’t do that kind of thing in public!”

Overwhelmed by happiness and embarrassment, my head felt like it was boiling over. From his former classmates, I felt stinging glares filled with jealousy, almost like hatred. But whenever my brother looked their way, they quickly averted their eyes.

I did feel bad for them, but this was all to protect my brother. And thus, I succeeded in protecting him throughout his middle school years.

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