Episode 4

Episode 4

May 3rd

After finishing my breakfast, I followed my sister who had returned to her room earlier and entered her room. For some reason, I felt hesitant to enter my sister's room, but I couldn't just let it go.

With determination, I knocked on the door and entered the room.

"Sachi, you're there, right? I'm going in."

"Fufu, you're here, Onii-chan. Is there something you want to ask me?"

She was sitting in a chair and seemed to be operating a PC, but as soon as I came in she stopped and looked over at me.

She looks at me with a fearless, confident gaze, and I almost feel overwhelmed by her aura, but I must first clear up this doubt.

"Yes, I have memories that are not my own. I want to know what they are."

"Hehe, that's true. But even so, that skirt suits you Mizuki-chan. After all, it's your 'favorite', right?"

I was overcome by a chilling sensation, as if something cold was crawling up my spine.

"How did you know that?"

"Isn't it obvious? I turned Onii-chan into Mizuki-chan after all. I can at least manipulate memories."

My sister said it as if it was a matter of course.

Of course, it was only natural, since it was my sister who transformed me into this.

"Little by little, the memories and knowledge of being a little sister are being stored in your brain and heart. You've probably never worn girl's clothes before, so you didn't know what to wear. That's why the memory of your 'favorite skirt' was stored as necessary information. And the same thing that was stored in me is being stored in you. So, if you act too much like a girl, you might actually become one, you know?"

"In that case, I won't leave the house. If I continue to act as I have been doing, I won't be poisoned."

"You're not going to be defeated that easily, aren't you?"

Her cold gaze pierces me, as if freezing me to death.

Like a frog stared at by a snake, I couldn't move. I felt like a little sister being scolded by her older sister, unable to resist.

"This is my plan to train you to be my little sister. I could have turned you into my little sister without you even realizing it, but that would be too cruel. These five days are just a grace period. But that doesn't mean I'll stop trying to turn you into my little sister. So do your best, Onii-chan~"

I realise that there's no point in saying anything more.

It seems like my sister is serious. She's seriously trying to make me her little sister.

So all I can do is to stay strong-willed and get through these five days.

"...Okay. One more thing?"

"What?"

"I think that PC is mine, so why is it in your room?"

My sister looked confused, but after thinking for a moment she spoke.

"Well, this is something I got as a gift for entering high school, right?"

"Huh!"

I felt a sharp pain in my head, and at the same time, unfamiliar memories started flooding into my mind.

That computer was something I was very happy to receive as a gift when I entered university.

I was jealous because my older sister got that computer as a gift for starting high school.

Memories of experiences that happened and memories of experiences that I have never experienced flood my brain at the same time.

I don't know. I don't know these memories. This is Mizuki memories. I don't know. I know. I don't know. I don't know. I know. I don't know.

"Ugh, ugh."

"Oh no, you couldn't withstand it. I think it's too early for you to break."

Disgusting, disgusting, disgusting.

Although I managed to avoid vomiting, I just felt extremely sick.

But unless I can endure this, I can't be a man. So I have no choice but to endure it.

"Shut up. I won't break."

"...Hmm. Why don't you go and rest in your room for now? Either way, you're at your limit right now."

"...I will."

As my sister told me, I decided to leave the room and rest. I thought the nausea would subside if I got some sleep.

Once I got to my room and lay down on the bed, I couldn't think any more.

May 3rd

After my brother leaves the room, I turn my eyes to the PC monitor.

"Precayle, how is Onii-chan?"

["There is nothing wrong with her physical system. The nausea she felt earlier was probably caused by mental stress. Her numbers indicate that she is in good health."]

"...How's the progress?"

["After the previous question and answer session, we finally reached 3%."]

"So just making her wear a skirt isn't enough?"

On the PC monitor, a window tab was open, crammed with vital data of my brother...no, Mizuki-chan. There was Precayle, busily sorting through the data, which was constantly changing every second.

On the outside, it's just a PC I stole from my brother, but inside, Precayle has done some magical modifications. Even I don't know how it works, but it's perfect for the time being while I'm working on this project, and Precayle seems to be having fun now that he can do more than he could on my smartphone, so I'll leave him alone.

["I think we're being presumptuous, but even though she was wearing a skirt, it probably wasn't that big of a problem because only her family could see it. It seems like the memories of her favorite skirt and her PC-related memories are more relevant."]

"Hmm... so it would be different if the party that looking at her changed."

Mizuki-chan will probably stay locked up at home.

However, I, as the organizer of this whole thing, won't let her do that. If I let her do that, the product will end up being incomplete. That's something I can't allow.

It would be a big mistake to think that I can complete the whole task by just staying at home. How can I make her understand this?

I consulted with Precayle and made plans for the future.