Believing She Has Been Reincarnated into a Baseball Game, My Little Sister Is Aiming for the Koshien, While I Give It My All to Keep Her from Finding out That It’s Actually an Ntr Game - Chapter 61

The next day, after a light practice session, we returned home to spend some relaxing time. After enjoying Maika’s delicious dinner together, I sat alone on the futon laid out on my floor and began to meditate.

Tomorrow is finally the finals. One more victory to Koshien. Our opponents are certainly formidable, but not as tough as Sakukage Academy, whom we defeated in the second round, or Bunda Affiliated, whom we beat in the semifinals. If I pitch like I usually do, we should be able to win.

Although there’s some fatigue, it’s not an issue. Mentally, I feel calm.

Over the past few days, so much has happened—truly a turbulent time. However, I must put those thoughts aside until tomorrow’s game is over.

After all, the issue we’re facing with Riko is a long-term battle. I have to dedicate my life to prevent Yogi Souta’s sub-heroine NTR.

I have already taken precautions, considering the possibility that Riko, who has gathered information from my father, may aim for Olivia Shion’s NTR. We have the student council president acting as a mediator to arrange for Olivia Shion to get a boyfriend from the baseball club. The president, who has tasted the joys of love, was all in, so it should work out well.

Even I, aside from Nomo and Kaneko, want the baseball club members to find happiness. After sweating together for these four months, I’ve come to trust all of them—except Nomo and Kaneko—from the bottom of my heart. Anyone except those two, I can introduce with confidence.

Of course, there might actually be some kind of time limit as a condition for clearing this game. If time runs out and it becomes impossible to clear, then that’s the best outcome for me.

But we have no way of knowing. In the end, we have to keep taking measures for the long haul. It’s truly a long-term battle.

Conversely, it means that there’s no clear time limit for Riko either. In other words, Riko doesn’t need to rush things. Up until recently, she misunderstood the condition for clearing the game as reaching Koshien, which is why tomorrow’s finals had become a sort of borderline for her.

The “No Erotic Stuff Until Koshien” rule was also established for that purpose.

The timeframe being vague, with Maika pointing it out and eventually setting it to “until Koshien ends,” was probably due to Riko herself not knowing the exact timing when the game ends. It seems like the ending my father spoke about was pretty vague. He just described it as “a moving ending that plays when you clear the game by securing a spot at Koshien.” (It’s obviously a lie, so no wonder it was vague.)

Riko, who didn’t want to risk me and Maika doing anything naughty, probably established a longer “No Erotic Stuff” period just in case.

But now, it’s become clear that such a borderline doesn’t matter at all. Whether I make it to Koshien or not doesn’t affect this world at all. Even Riko knows that her life isn’t linked to it.

By now, Riko should be purely cheering for my match tomorrow. I need to focus on the game without any unnecessary distractions.

It’s no time to be getting worked up imagining Maika in the bath! Meditate, meditate!

“Suu——… Huu——…”

……

……

Time passes in silence. I let go of idle thoughts and surrender to the flow of time. The only things filling this room are my breathing and the lingering floral scent Maika left behind. Damn, it’s way too sensual. Why does she have this occasional period, like once a month, where her jasmine-like scent gets particularly strong? Apparently, it’s something only I notice, but it smells way too good. And on top of that, during such times, she tends to get closer, clingy even, with this sweet attitude. She’s more plump than usual, too. In my previous life, I called this period in my head the “Golden Ecchi Era” (or sometimes, the “Golden Plump Era”). But why, of all times, did she have to enter this Golden Ecchi Era tonight? Don’t disturb my meditation. Murah, murah… muchii!

“Onii-san, onii-san, what’s this ‘Golden Ecchi Era’ thing? Riko is very curious!”

“Please, Riko, could you learn to knock?”

“I did knock, but Riko’s knock is a soft ‘mochi-mochi knock,’ so maybe it didn’t make much noise.”

“Then it can’t be helped. Sure.”

Ultimately, it’s my fault for letting words like “Golden Ecchi Era” slip out while meditating. I’m overwhelmingly at fault.

Even before taking a bath, Riko’s skin is plump and smooth as she sits down beside me, clinging closely.

“Onii-san.”

“Hm? What is it? Do you want to meditate too, Riko? It really clears your mind.”

“Oh, that sounds lovely! Please let me join you!”

Yes, that’s wonderful. More than anyone, I want Riko to clear her mind of unnecessary thoughts. No past or future, just letting herself be carried by the time flowing in this world. That must be the truest happiness.

“Alright, Riko. You sit like this, in the lotus position,”

“Okay.”

“Then, you close your eyes,”

“Mmh.”

“‘Mmh?’”

The moment I closed my eyes, I felt a soft, moist sensation press against my lips. A wave of pleasure mixed with a bad premonition ran down my spine—I opened my eyes, already certain of what was in front of me.

A weight settled on my legs, which were crossed in the lotus position, and a peach-like scent floated around me. Soft, fleshy arms wrapped around my shoulders.

Riko was clinging to me—and had kissed me on the lips.

“Riko… what are you doing…?”

In front of me was Riko’s flushed red face. As she slowly pulled her lips away, she looked up at me with tearful eyes, gazing with a longing expression.

“I love you, Onii-san.”

“I know, but… you can’t just kiss me on the lips. This is a huge offense that we’ll have to bow down to Maika for, you know…?”

“It’s fine. Everything’s over now anyway.”

“Huh? Hey… wait…!”

Riko’s lips pressed against mine again. Desperately, I pushed her shoulders away, trying to escape from her clingy kiss.

“What the hell are you thinking, Riko…?! Stop it!”

“Onii-san…”

Her voice sounded sultry, her expression seductive, and her fingers traced along the inside of my thigh. Riko then pulled something out from the pocket of her shorts.

A thin, square packet only a few centimeters across. A familiar black square—an essential part of my pitching kit.

It was a condom.

“I got these for you, Onii-san. It was embarrassing, but I bought them at the home center.”

“Cut it out! Stop joking around!”

Riko began tearing open the condom packet with her teeth.

“This isn’t a joke. You’re the one who taught me, Onii-san. You said with these ‘extra-thick ones,’ you can be safe. So it’s fine. There’s no need to worry. It’s okay if I just become a convenient mochi-mochi hole for you. Feel good with Riko’s soft, plump virginity.”

“Riko!!”

My voice, raised in genuine anger, caused Riko to flinch.

“…Sorry, I didn’t mean to yell. But this is serious. Onii-san is genuinely angry right now.”

“I am too. I’m really angry at this stubborn Onii-san who just doesn’t understand.”

Riko glared at me with those tearful eyes, looking so cute even then, but I couldn’t let my anger subside. There were too many things to lecture her about.

“There’s a lot I want to say, but first of all, don’t degrade yourself like that. There’s no such thing as a ‘convenient mochi-mochi’!”

“That’s up to me to decide. It’s my mochi-mochi, so it’s my choice when, to whom, and how I want to give it.”

There was an unmistakable sense of urgency in her words and expression. Riko was clearly lost.

“Calm down, Riko.”

“There’s no time for that! I want you to hold me tonight! Take my mochi-mochi! I don’t have much time!”

“Stop this nonsense!!”

“I won’t back down even if you yell at me! I want you to take my virginity with your extra-thick!”

Riko clumsily pulled the condom out of the packet with her lips.

This is obviously wrong.

I knew she was trying to sacrifice herself to trigger the sub-heroine NTR. But there was no reason for her to be in such a rush.

Why was she so fixated on tonight? That borderline involving Koshien should’ve disappeared. And why was she so obsessed with these extra-thick condoms? Don’t criticize your brother’s quick trigger in such a crucial moment of life.

“I’m telling you, this is impossible! You’re completely wrong about everything!”

Starting with, she likely misunderstood the material. Learning these overly suggestive ways of handling condoms first was completely out of order. I hadn’t even undressed, and most importantly—

“Even if you’re wrong, it doesn’t matter! Even if it’s a mistake, please take my first time! I won’t tell Maika-chan… With your extra-thick, it’ll be over quickly, right?”

“That’s not the point! It’s not even a matter of whether we do it or not! I can’t even get hard for anyone except Maika!”

“Now, hurry! Hurry and—huh?”

“I can’t have feelings like that for Riko. I can’t even get an erection, let alone have sex!”

“………!”

Riko’s eyes widened as if she had lost her words.

Yeah, I might’ve exaggerated a bit. But the fact that I can only get intensely aroused and quick-triggered with Maika is a real thing.

It’s been that way ever since the beginning.

The first time I felt any sexual desire, it was for Maika. Ever since then, those urges only ever surfaced for her. Because I always thought she was my real sister, I lived with an overwhelming sense of guilt, thinking it was unforgivable. I repeatedly tried to suppress my urges and relieve myself with other things, but it was impossible. No matter how long it took, I couldn’t climax without thinking of Maika, and eventually, she would slip into my fantasies, and I’d end up doing it with thoughts of her—over and over. Each time, the guilt almost crushed me.

The concept of “Koshien NTR” saved me.

It took a long time, and it wasn’t particularly pleasant, but by focusing on NTR, I could handle my urges without thinking of Maika. Looking back, it was probably because by treating it as NTR, I managed to keep Maika separate from it.

I could never imagine her being taken away from me.

So, the undeniable truth is that I’ve never felt any sexual feelings towards Riko and never will.

“So, Riko,”

Feeling like I might’ve been too harsh, I gently patted Riko’s head.

“It’s impossible for me to ‘NTR’ you. Besides, you shouldn’t be in such a rush either, right? Please, Riko. I promise I’ll find a way to make you want to live in this world.”

“Then…”

“It might take some time, but… just wait. I promise I—”

“In that case, I understand.”

“Thank you, Riko.”

“I will kill myself.”

“What?”

“If you won’t take my mochi-mochi virginity with your extra-thick, then I’ll have to use my last resort. I will die.”

“What?”

Unable to respond with anything other than “What?”, I watched as Riko stood up. A crushed, rectangular box fell from her back pocket, but Riko didn’t even glance at it as she turned her back to me and walked towards the door. Why bring the whole box of condoms…? No, this isn’t the time for that!

Did she just say… kill herself? Last resort—does she mean…?

Riko reached for the doorknob, speaking in an indifferent tone without turning around.

“A simple suicide won’t end this world. It won’t send Onii-san and Maika-chan back to their original world. Nor will it create a situation where Riko’s death would be Maika-chan’s fault. This won’t bring about a decisive rift between you two. Nor will it send the monsters back to their original world. Even if I die in this world, there’s no guarantee I’d become a ghost like I did before. This is far from the best ending I envisioned. But,”

“Stop it… Don’t say such things…”

“But! It’s a sufficient conclusion. If I die, I should be able to become Onii-san’s number one again. Even if Maika-chan marries Onii-san in this world, the possibility of me remaining as number one in your heart is still there. If I can achieve just that, I’ll be satisfied.”

“Enough of this, Riko!!”

As I lost my temper and shouted, Riko opened the door and ran out.

Of course, I immediately got up and chased after her—but my legs were numb, and I stumbled. Damn it, that mochi-mochi body of hers is deceptively heavy!

She ate a lot to become this plump. So why would she want to throw away her healthy body?

You’re not really going to kill yourself, right? This is just to get my attention, right?

“Wait, Riko!”

Without looking back, Riko dashed into her room.

“Hey, Riko! …Open the door!”

By the time I caught up, her room was already locked.

No matter how much I knocked, all I got was a muffled response saying, “You’re being noisy! I’m preparing my heart! Leave me alone!”

Damn it! Why does only Riko’s room have a lock?! Oh right, it used to be Yamada-mother’s room. Damn her for this!

If it’s come to this…

I rushed down to the entrance, grabbed a bat from the umbrella stand,

“Whoa, whoa, whoa, what are you doing, Kyugo?! Scary!”

Just as I was about to dash upstairs with a bat in hand, I felt the hem of my T-shirt being tugged, stopping me in my tracks. It was my freshly-bathed, warm, floral-scented, plump wife. So sexy.