Yandere and Menhera - Suddenly Having a Yandere Older Stepsister and a Menhera Younger Stepsister Makes Every Day Difficult

As I rub my sleepy eyes and rise the next morning, I feel a slight weight on my body.” Upon a sudden glance to my side, there was Ririka-chan, sleeping soundly while clinging to my body and breathing quietly.

I did a double-take and then ended up yelling out loud.

“What?!”

“Mmm…”

“Ri, Ririka-chan?!”

As I tried to wake Ririka-chan by shaking her, alerted by my loud voice from before, Matsuri-neesan came running to my room, her footsteps in a fluster.

“What’s wrong?!”

“Ma-Matsuri-neesan…”

“Is that Ririka lying next to you?”

“Yes. It seems she sneaked in after I fell asleep.”

Matsuri-neesan was emitting an overwhelmingly intense aura of murderous intent. Terrified, I shook Ririka-chan even harder than before in my rush to wake her up.

“What’s going on?”

“Ririka-chan!”

“Ah, Onii-chan, good morning.”

Seemingly still half asleep, Ririka-chan aggressively moved in to kiss my cheek. If I provoked Matsuri-neesan any further, I feared for my life. That’s how stern her expression was.

And then, a few seconds later, the dam broke.

“He’s my Ryusuke-kun!”

Matsuri-neesan started crying. I was just standing there, mouth agape, unable to say anything.

As for Ririka-chan, the moment Matsuri-neesan began crying, she sighed and said,

“Here we go again.”

“Ririka, you’re the one at fault!”

“Shut up. You think a childish girl like you can capture Onii-chan’s heart?”

“Stupid Ririka!”

While I found them somewhat adorable, I tried to console Matsuri-neesan by stroking her head, and she, looking pleased, moved her face closer to mine, aiming for my lips.

I instinctively backed away, and then Matsuri-neesan, crying again, said,

“I really like you, Ryusuke-kun… Hey, Ryusuke-kun…”

Glancing at Ririka-chan, I saw her sighing at Matsuri-neesan’s crying face, her cute, sleepy look from the morning wholly gone, replaced by a somewhat angry expression.

What a way to start the morning.

With these thoughts, I decided it was time for a long-overdue run, grabbing my entire jogging outfit and sequestering myself in the bathroom.

Though I had sequestered myself in the bathroom, Matsuri-neesan and Ririka-chan were banging on the door, saying,

“Hey, come out!” from Matsuri-neesan.

“Onii-chan, why are you going to the bathroom?” from Ririka-chan.

Changing into my jogging clothes, I knew the moment I stepped out of the bathroom would be crucial. I burst through the door, making sure not to get caught by either of them.

“Ryusuke-kun!”

Matsuri-neesan cried out as if we were parting forever. Doubting if this is really how a woman about to enter college should act, I started my run.

◆　◇　◆

Due to it being Saturday, the day became quite hectic for me, and I wasn’t able to keep my promise to Yuka-san. Wondering if I would see her today, I headed to our usual spot with a nervous excitement. There, Yuka-san was waiting.

“Yu-Yuka-san!”

“Oh!”

“I’m sorry.”

“You finally came. Thank you.”

“No, I’m the one who should apologize. I promised.”

“It’s okay. I’ve been waiting for you all this time.”

Yuka-san was incredibly kind to me, even though I had broken our promise. I was just so happy I could fall for her.

“Shall we go then?”

“Yes!”

As we jogged at a pace that didn’t tire us out too much along our usual route, we attracted curious looks from elderly men and women out for their morning walks.

Hoping we looked like a couple, I listened in to their conversations, only to hear an elderly man exclaim loudly,

“Such a close-knit brother and sister!”

Disappointed that I appeared so childish, Yuka-san, seeing my dismay, whispered in my ear.

“It’s okay. You’re plenty adult.”

“Wh, what?!”

Embarrassed by my all-too-virginal reaction, and intoxicated by Yuka-san’s soft fragrance, I found myself running out of energy faster than usual and suggested we rest at a nearby park bench.

“Good job.”

“Yuka-san, good job to you too!”

“Are you okay?”

“Ah, yes. Just a lot has been happening recently.”

“I’ve been going through some changes of heart myself.”

“Someone you like?”

“Hey! You can’t just ask that so easily.”

Yuka-san smiled as she playfully rubbed my cheek. I found her both adorable and beautiful.

Just as our conversation was getting lively, Suddenly, from somewhere, an incredibly sharp murderous intent struck my back. A chill ran down my spine, and as I began to sweat, Yuka-san pointed behind me and said,

“And who might you be?”

“I’m Ryusuke’s girlfriend, Matsuri.”

“Is that so…”

Yuka-san looked at me.

“Is she really your girlfriend?”

“No, she’s my older step-sister!”

“Oh. Such a beautiful sister, huh?”

“Ahaha.”

Yuka-san gave me a wink, then turned to Matsuri-neesan with a sharp look in her eyes as if picking a fight.

“We’re just out for a run. What do you need with him?”

“I thought maybe you were trying to trap Ryusuke-kun, so I came to rescue him.”

“Oh my. To think that I appear that way to someone as unintelligent as yourself.”