Chapter 78 - A Clean Slate – First Part (1/2)

“Nii-san…? W-who was that person?”

Sunday night, once I returned home, Sana quickly showed up in my room. She probably wanted to ask about Yukiko-san, who she encountered on her walk.

“It’s just a person I meet once in a while. Her dog is called Seiji, and so we ended up getting to know each other a bit more.”

I once again told her the story that I made up in advance.

“Is that so… then it’s fine, but… w-when you say close… close enough to do lewd things…?”

Stop asking if you’re just going to turn red. Even I’m getting a little embarrassed now.

“Didn’t I explain to you by text that that was a mistake?”

“… R-really?”

“Really, it’s true. What’s with you, after I come back, you’re just asking the same thing over and over again…”

Seeing me shake my head back and forth, Sana began to shake as well.

“S-Sana doesn’t care about anything when it comes to Nii-san!”

Sana threw a cushion at my face.

“Puhah!?”

Gon, with an excessive amount of momentum, I hit the back of my head on something. My eyesight turned black. It seems I’ve fainted.

◆Sanada Seiji◆

“Nii-san…? A-are you okay? T-that was a pretty loud sound…”

I woke up to my body being shaken. In front of me, was a beautiful girl with long black hair, looking at me worriedly.

“Ah, you woke up. T-that really surprised me.”

“Ummm… Can I ask who you are?”

“What are you saying? Stop it with that. You’re just joking, right? Sana won’t bite on that one.”

I look around the area, unable to recognize anything.

“Is your name Sana-san?”

“…… Nii-san?”

Since she looks at me and calls me Nii-san, I guess this girl is my little sister.

“Such a beautiful girl, is my little sister…?”

Sana-san’s face turned red.

“B-b-beautiful… E-even if you say something like that, Sana won’t be happy.”

She looks really happy.

“Nii-san, what happened? Your name? What’s your name?”

“My name… Hmmm?”

I don’t know it at all. Who am I? What am I? Moratorium… [1]

“You don’t even know that? M-memory loss…”

“Ah. That might be what happened.”

“Fueeeeeeeeeeeeeeeh!? I-is it because of Sana!? B-but, if it’s Nii-san that’s been wiped clean, maybe Sana can be more honest…”

She’s fidgeting and saying something. According to Sana-san, my name is Sanada Seiji. This place seems to be my room at home.

Sanada Seiji… Sanada Seiji… I feel like I’ve heard it before, or maybe not…

“A-and also. This next part is the most important. Nii-san is a helpless siscon older brother that loves Sana.”

“Eeeh. Really? What was I doing? You certainly are beautiful though.”

“M-moouuuuu, don’t call Sana beautiful! I’ll end up going crazy.”

That’s she says, but I was just saying what was on my mind.

“A-also… It’s a secret, but we are blood-related siblings… and we’re lovers…”

No way, that…

Kaaaa, Sana-san’s face turned red.

“… Eh, for real?”

“F-for real.”

I liked my little sister…!? I guess it couldn’t be helped that I was called a siscon older brother though

“T-this is something no one, and of course not even Tou-san or Kaa-san know. No one other than us knows about this. That’s why you shouldn’t tell anyone else, okay? Do you understand?”

“Y-yeah. Well of course, if it was found out it would be terrible…”

“T-then, that’s that!”

Then, Sana-san left my room.

I apparently go to school at the nearby Hasumori high school, and am currently in my second year. So the next morning, I was woken up by someone who seemed to be my mother, and went to school with Sana. Just like I was told, I sat down in what seemed to be my seat within the class B of the second year. Looking at my notebook, I saw various notes taken down.

After seriously taking a few different classes, it became time for world history class. It was taught by a young female teacher. She had a cute looking face, and her movements and gestures seemed refined. She was a bright person that looked good in a ponytail. Our eyes ended up meeting a few times, during which, my heart would start to beat faster.

What is this…? It’s almost as if I can remember something…

The students call her Hiiragi-chan.

While holding a textbook, she did her explanation, and seemingly threaded her way through the seats towards me. Then, she crouched down, and picked up something near her feet.

“You dropped your eraser.”

“This isn’t mine though?”

“Eh!? Eh, what? No, I mean… I mean…”

While holding a new eraser in hand, Hiiragi-chan-sensei seemed to be at wit’s end.

I don’t recognize it. Is it really mine? I accepted the eraser while tilting my head. Sensei seemed relieved as she patted her chest.

There’s something in the case…? A folded note came out with something written on it.

[For today’s lunch break, I’ll be waiting in the world history reference room ♪]

Wha.

What is thiiiiiisssssss!?

Waiting. Who is she waiting for?

Trying to confirm it, I move my eyes towards Hiiragi-chan-sensei and see her wink back twice. Which means, that message was for me.

The reference room, am I supposed to help out with preparing for class…? No, but, if it was that, she could just ask me normally. The complicated manner in which she did this, the reference room where no one would be, and calling me out during lunch break…

——This, isn’t it as if I was being confessed to!?

“Uwah. What should I do?”

“What do you mean, what should I do?”