Yandere and Menhera - Suddenly Having a Yandere Older Stepsister and a Menhera Younger Stepsister Makes Every Day Difficult - Chapter 1 - 25/26

It was after I arrived home. I went to my room, slowly put down my bag, and without changing my clothes, I lay down on my bed. I yawned once and was about to close my eyes and try to sleep when it happened.

Matsuri-neesan came rushing in with a loud bang.

“What, what?!”

“Save Onee-chan!”

I was only able to be surprised by the sudden SOS, but a few seconds later, I understood exactly what kind of help she was asking for.

Ririka was brandishing a kitchen knife at Matsuri-neesan, flickering the blade in her direction. I tried to calm down and asked Ririka what was going on.

“What’s wrong?”

“Hand over that slut over there.”

“W-Where did you learn to say ‘slut’?”

“Just do it.”

Ririka’s eyes were serious. I was truly afraid she might actually stab someone, but as I protected Matsuri-neesan, Ririka suddenly began to cry and dropped the knife on the floor.

I slowly picked up the knife and ran to stash it in the kitchen, then immediately sat down between Ririka and Matsuri-neesan to hear them out.

“Onee-chan always monopolizes Onii-chan.”

“But Ririka always sneaks into Ryusuke-kun’s bed to sleep with him, so that’s fine!”

“Being with Onii-chan when he’s awake is more in demand, isn’t it?!”

“Shut up!”

“There it is, when you can’t say anything back, you just respond with ‘shut up’ or ‘stupid’, typical of a high schooler with a poor vocabulary!”

“Shut up, shut up!”

Matsuri-neesan showed a lack of vocabulary that even a lower elementary schooler wouldn’t lose to, while Ririka completely won the verbal fight with her unexpectedly high level of vocabulary for her age. As I wondered how to stop them, Matsuri-neesan clung to me and said with teary eyes.

“Scold her!”

No, shouldn’t that be your job?

I kept that thought to myself, and just when I was about to persuade Ririka to not commit any more mistakes by holding a knife, I had a bad feeling when I suddenly noticed Ririka was gone.

My premonition was correct. She had picked up the knife again and was about to cut her wrists this time. I hurriedly pulled Matsuri-neesan away and persuaded her not to hurt herself.

“Hey, let’s not hurt ourselves like that, okay?!”

“Shut up. Onii-chan likes Onee-chan, doesn’t he?”

“I can’t say he doesn’t, but, uh…”

“It’s okay. I can forget the sadness with pain.”

“That’s not okay!”

“Shut up. It’s enough.”

Menhera is scary!

As I thought this, Matsuri-neesan stood up and hit Ririka on the cheek.

“Always causing trouble for Ryusuke-kun without ever growing up. You’re the worst sister.”

“What?”

“Cutting yourself to show how pitiful you are?”

“Huh?!”

“I won’t stay silent either. Even a troublesome woman like me is glad not to be a pitiful person like you.”

“You slut. Say whatever you want!”

Feeling this fight would never end, I took the knife from Ririka, returned it to the kitchen, and let the two argue in the living room. Then, I jammed my earphones deep into my ears and fell asleep on my bed in my room.

◆　◇　◆

The music flowing from the earphones was comforting, dragging my mind and body towards a peaceful sleep. Just as I began to drift off, losing consciousness, I was abruptly awakened.

Ririka had jumped onto me, waking me up just as I thought I was finally going to be able to sleep. My irritation hit MAX, exhausted from the earlier sibling quarrel and now being jolted awake.

“Argh, enough!”

“O-Onii-chan?”

“Don’t disturb me when I’m sleeping!”

“Sorry, sorry.”

“Bringing a knife, waking people up, I really should have never lived here!”

Unintentionally, I said something I shouldn’t have, and I felt a bit regretful as Ririka turned tearfully sad and said,

“I’m sorry, Onii-chan.”

“As long as you understand.”

“Onii-chan, let’s talk to dad and leave this house.”

“It’s fine, no need to do such a thing now.”

Saying that, Ririka seemed a bit happier but still had a somewhat gloomy expression as she returned to her own room. I thought I had said what needed to be said, even if it was a bit too much, and optimistically decided to apologize tomorrow.

Then, I closed my eyes again, waiting for the next morning while letting the music play.

☆☆☆

The next morning, I kept hearing restless footsteps. Thinking Ririka was causing a commotion again, I forced my heavy body up to check on her. Matsuri-neesan was preparing a delicious-looking breakfast on the table, seemingly about to leave for somewhere.

“Ne, neesan?”

“Ryusuke-kun. Where’s Ririka?”

“Eh?”

“She’s not here.”

“Isn’t she at school?”

“Her school bag is still in her room, but Ririka is missing.”

“What?!”

The thought crossed my mind that Ririka might have run away because of what I had said yesterday. Worried that she might have run away and could be taken by someone strange, potentially leading to a real incident, I quickly changed and went outside to search for her, asking neesan to wait at home.

I raced through the town, but couldn’t find Ririka anywhere. Not in the park where I thought she might be, nor at the town’s supermarket, thrift shops, or anywhere else.

It’s my fault. I shouldn’t have spoken to her like that.

Filled with regret and trying to conserve my energy, I kept looking around while walking when I spotted a familiar figure of a young girl at the police station and rushed over.

Entering the station, I saw a familiar head of hair and familiar clothes—it was Ririka.

“What is it? Who are you?”

“S-sorry. I’m this girl’s stepbrother.”

“Eh?”

While the police officer looked at me with a bit of suspicion, Ririka turned around and said with teary eyes,

“Onii-chaaaan…”

“Ririka.”

Ririka apologized repeatedly while hugging me, even though I was the one who should be apologizing.

Then the police officer said,

“You’re the stepbrother, right? You shouldn’t take your eyes off your sister. She just sat here without saying anything, just looking down the whole time.”

“I’m sorry.”

“Well, it’s fine this time since nothing happened. But this could have led to an incident.”

“Yes, I’m sorry.”

The officer spoke while looking at me as if I were filth.

I took Ririka home, and we returned without speaking a word to each other the entire way.