About the Case of Me Being Reincarnated as a Side Character Who Got Kicked Out Immediately Of The Story, but the Heroine, Who’s My Yandere Fiancée, Won't Leave Me Alone - Chapter 38: Outside, a Brother; Inside, a Sister

Chapter 38: Outside, a Brother; Inside, a Sister

Minato’s expression shifted as if she were a completely different character, but she quickly gave a wry smile upon seeing my stunned reaction.

“Sorry, Aniki. I really did mean to talk about it someday, but this was too sudden, so I got a bit playful.”

“I-I see…”

“Mom said you might have something to talk about soon, but I guess this was it, huh?”

Oh, so that’s how Mom framed it.

Even Minato didn’t know the details, but in a way, she was mentally prepared.

“So… now that you know I’m a girl, what do you want to do, Aniki?”

“Uh… I don’t know.”

“You don’t know?”

“Yeah.”

Pathetic as it is, I don’t have a clear idea of what I want to do.

But staying silent felt wrong, so I decided to at least share why I wanted to have this talk.

“As you know, Minato, I’ve been thinking a lot lately. About Arisu, Amane-san, and others… Well, Arisu’s the biggest influence. She’s inspired me to try harder, to give it my all.”

“Mm-hmm.”

“Being an Izayoi gives me opportunities to do things others can’t. Like covering Amane-san’s brother’s medical bills or neutralizing the threat of her abusive father—those went so smoothly because I’m Akito Izayoi.”

“Not everything’s like that, but yeah, there are advantages only a family like ours can leverage.”

“Right?”

Of course, let’s say I’d run away as Akito or been ousted while still the old me, and the story moved on without my knowledge… Would the people I’ve helped—like Sophia and Filia—be smiling right now? Probably not.

“So, I thought about you too, Minato.”

“About me?”

“Yeah… We’ve never talked like this before, but if I’d stayed the same and left the family, you’d have taken over the Izayoi name, right?”

“That’s… true. It’d be my way of repaying Mom and Dad for taking me in and raising me with love.”

As expected, that was Minato’s intention.

Instinctively, I reached out and patted her head… but realizing she’s a girl, I started to pull back. Before I could, Minato’s gaze met mine, her eyes seeming to say it was okay to keep going. So, I continued patting her head while speaking.

“Let me talk hypothetically for a sec.”

“Huh? Sure.”

“I thought about what’d happen if I ran away or got kicked out as the old me. I don’t know if it’d be forever, but you’d keep hiding that you’re a girl, take over the family, and live pretending to be someone you’re not.”

At some point, you’d slip up, or Mom and Dad would say you don’t need to go that far… but you’d dedicate yourself to the family out of gratitude.

In the original story, Minato was definitely a boy, and that’s likely how it’d play out.

If so, you’d spend your life deceiving everyone… Plus, the old Akito’s screw-ups would’ve brought plenty of trouble to the Izayoi family.

“So… here’s the thing. Since I’m here, if there’s a way you want to live, I want you to do it.”

“Haha… Your words are all over the place, huh?”

“Sorry… Honestly, I have zero resistance to the bombshell that my little brother is actually my little sister.”

“Don’t worry. Stuff like this doesn’t happen often.”

Her words made me chuckle and nod.

“Aniki… you’ve really changed. You’re nothing like the old you—like a totally different person. I get why Arisu-san’s so taken with you.”

“…Arisu’s changed a lot too, hasn’t she?”

“Yeah… but that’s because of the you now. Even if your words are messy, your eyes show you’re genuinely thinking of others.”

“But,” Minato paused, her smile fading.

Her androgynous features shone through as her expression turned serious.

“But doesn’t that mean you’re taking on a lot yourself?”

“Well… maybe, but I—”

“Sorry, I know I’m arguing back, but if that’s the case, I want to support you, Aniki.”

“Support me?”

“Yeah—I want to stand by you as your family, not as a brother but as a sister. Brother or sister doesn’t matter; it’s about being family and supporting you because I’m by your side.”

If I stay in the role I was ready to abandon, especially now that we’ve grown close, Minato wants to support me.

Yeah… it’s because we’re family, because we’re siblings.

“We only got close recently, but there’s a familiarity from always being family. There are things you can only say to me, right, Aniki?”

“…Yeah. Whether you’re my brother or sister, there are things I can only say to you, Minato.”

“Right! Being together like this feels different from being with Arisu-san or Amane-san, doesn’t it?”

“…It does.”

I nodded wholeheartedly.

Even without blood ties, the sibling bond feels unique—something I don’t have with Arisu or Amane. What am I even saying, as someone who just started living in this world?

“So, as someone in that position, I want to support you… How’s that for now?”

“…Yeah. I might be overthinking things.”

“I’m still in middle school, and you’re just a first-year high schooler, Aniki. Thinking about the family’s important, but for now, you only need to think about it lightly.”

“Haha, true.”

…Wait, the conversation’s veered off track.

Minato seemed to notice too, saying she’d get back to the point.

“You making time for this shows you were thinking about me, right? That made me really happy.”

“Glad to hear it… So, what’s your plan?”

“Hmm… Can I share my thoughts?”

“Go ahead.”

“I’m fine with things as they are. Only the people who already know need to know… So I’ll keep being the male Minato.”

“…You sure?”

Minato nodded with a smile.

It wasn’t forced—she genuinely seemed to want this.

“Yeah… I’ll probably tell close people like Arisu-san or Amane-san eventually. But for now, this is fine. Being seen as a brother is convenient sometimes.”

“Huh.”

“So, Aniki, I’ll keep acting as your brother outside. But… when it’s just us, can I be your sister?”

“!”

Her puppy-dog eyes caught me off guard, making my heart skip.

She looks the same as always—the brotherly Minato—but knowing the truth and being looked at like this feels strange.

“…If that’s what you want, I’ll accept it.”

“Yeah!”

Minato beamed.

I was nervous and embarrassed, but her smile made it feel trivial.

In this moment, our hearts grew closer.

Since Minato’s chosen to keep living this way, she’ll still carry secrets, but I feel like a new chapter’s starting for us as siblings.

“So, can I make a request right away?”

“Huh? Bring it on!”

A request from my little sister… I’ve always kinda wanted this.

I said it eagerly, but… while I don’t regret it, I was a bit reckless.

Because—

“Aniki♪”

“…”

That night, I ended up sleeping in the same bed as Minato.

Since Amane-san won’t be here to wake us tomorrow, Minato suggested it.

“Ara~? Aniki, are you nervous?”

“…”

Minato’s not in her usual pajamas.

Since I know the truth, she’s wearing a thin, risqué negligee-like outfit.

A middle schooler wearing that!? I thought, but according to Minato, this is normal for middle schoolers these days… Seriously?

(…She’s your sister, dude! Don’t overthink it!)

I tried not to, but with that outfit, her chest isn’t bound, and her Arisu-level bust is pressing against me… Ugh, I shouldn’t have agreed so easily!!

Thankfully, I was more exhausted than I realized and fell asleep quickly.

(…This is fine, right?)

(Aniki… Fufu, I never thought it’d turn out like this. But we talked about so much… Now that you know, I can be your sister. Haha, what should we do next? I’m so excited!)