The Story of How Producing My Timid Older Sister Developed My Sexual Preferences

Chapter 009: The Truth of the Shimizu Family Revealed (It Wasn’t Hidden)

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I woke up from the humid heat. Checking my phone, it was past 11 AM.

When did I fall asleep? I recalled last night. That’s right… I thought Sis and I might not be blood-related.

This was the worst wake-up I’d had in years. I had never felt this depressed before. Unlike last night, I was now filled with intense anxiety.

I jumped out of my room and headed to the living room. I flung the door open, and the person I was looking for was there.

“Good morning. Huh? You don’t look so good. Are you o——”

“Are Sis and I not blood-related?”

“Haa? What’s with that all of a sudden in the morning? Did you have a bad dream?”

My mother’s half-laughing reply made my blood boil. I’m being serious here, stop grinning like an idiot.

“I’m asking if we’re blood-related!!!”

“Who do you think you’re talking to like that?”

She didn’t flinch at my shouting at all. Instead, she glared sharply at me.

For a second I almost faltered, but anger won out.

“Shut up! Just answer me!!!”

“Haa… Of course you’re 100% related. Want me to get your family register? If you’re not convinced, go get a DNA test. Pay for it yourself.”

Mom spoke in an exasperated tone. She didn’t look like she was lying.

My sister must have heard my shouting. She peeked out from the dining room, looking worried but also scared.

Ah… She’s wearing the T-shirt I gave her. It’s a bit small, so her chest is emphasized quite a lot.

My ragged emotions gradually calmed down. Looking at her peeking out like a small animal from a hole in a tree, my heart rate settled.

Let’s calm down.

“Then why do we look so different?”

“Pffft! Eh!? That’s so random!! We’ve lived together for nearly 15 years and you’re only asking that now!? Don’t make me laugh!”

Mom held her stomach and laughed hysterically.

Yeah, that’s true, but… it’s pissing me off. This damn troll.

“Especially the hair! Hers is all curly!”

My sister bashfully pressed down on her hair.

“And those eyes! How is that eye color even possible!?”

She covered her face with her hands and fled back into the dining room.

“Pfft, why are you asking now of all times!? You’ve been living with her this long! Ahahaha, this is too funny! It hurts, stop it~”

She must have hit a really funny spot because she wouldn’t stop laughing. I was considering punching her when she finally caught her breath.

“Whew~ That was good. She just takes after your grandmother. Your paternal grandmother — she was Brazilian.”

“Huh? What do you mean? So Sis is a quarter?”

“No, not just your sister. You are too.”

My sister brought over a cup of coffee with milk and placed it next to Mom’s mug, encouraging me to sit. Three matching Spirit Busters mugs were lined up, centered around Mom’s.

“Ah, thanks. So basically, Dad was half-Japanese? He didn’t look very Japanese at all?”

I sat on the sofa, sipping my coffee and continuing my questions.

“That’s right. Did you forget? Your grandfather was Japanese and your grandmother was a Brazilian of European descent. Though honestly, your dad looked completely Japanese.”

“I look fully Japanese, so why is Sis the only one who…?”

“It’s atavism, probably. I was shocked when I gave birth to Tabasa. Her skin was pure white — I thought she was an angel.”

Mom stroked my sister’s arm in a perverted old man way while speaking. My sister trembled and turned bright red.

“When she opened her eyes, they were so beautiful. Your dad was overjoyed, saying she had the same eyes as his mother. That’s why we named her after your grandmother — Tabasa.”

The history of the Shimizu family was revealed. I had probably heard it before, but I was still surprised.

“…I didn’t know. You knew, right Sis?”

“Yeah…”

My sister nodded, but her face looked dark.

Mom smiled gently and this time stroked my arm.

“It was right after the accident, so it’s understandable if you forgot. It’s not really that important anyway.”

I wasn’t shocked. Just surprised. In fact, the depression from last night had completely lifted, and my heart was rejoicing with a refreshing feeling. Maybe I was in a manic state right now.

But my sister’s face remained dark. It even looked a bit pale. I couldn’t stand seeing it.

I turned to Mom, who still had a gentle look in her eyes.

“So that’s why… my dick is so big…”

In an instant, Mom’s eyes changed to pure contempt.

“You’re disgusting… Nobody cares!!!”

A full-power punch landed on my shoulder. It didn’t hurt much, but she kept jabbing me accurately with her knuckles.

“Ouch!!!”

I looked at my sister. Her previous dark expression had vanished. After my sudden “big dick” comment, she was hugging her large breasts with her arms, making a triangular shape over her mouth with her hand, and her face was bright red.

“Ow! DV! This is child abuse!! Sis! Call child protective services! Child services!”

“Fufu… fufufu…”

Thump——

Sis was laughing. Her large droopy eyes narrowed even further. The corners of her mouth, which usually pointed down, lifted sharply into a wide smile that showed her back teeth.

A sense of déjà vu. No — this was a face I had seen many times before.

My memories gradually became clearer. Just like Mom said, it was an angelic smile. One I could stare at forever——

“Sis… is laughing…”

I accidentally said it out loud. She immediately covered her face.

“Of course she’d laugh. By the way, you gave her that T-shirt, right Terumi? Good job.”

“Yeah, she was way too stuffy.”

“Seriously. I feel like the room temperature dropped by 3 degrees.”

My sister shrank under our stares.

“Next is that hair. If we do something about that, it’ll drop another 2 degrees.”

“Yes! I totally agree!”

“…” shake shake

My sister shook her head desperately, refusing with all her might. Ignoring her, Mom tapped away on her phone.

“You’re free today, right? I’ll make a reservation.”

“N-nooo…”

My sister clung to her desperately, but Mom easily brushed her off and kept tapping.

“Ah, can’t do it today. Tomorrow’s a holiday anyway.”

My sister looked relieved.

“I booked Wednesday at 6 PM. You don’t have university classes, right? Even if you do, go.”

She was being extremely pushy. My sister’s mouth corners drooped visibly. Poor thing… I decided to join in.

“If you’re getting your hair done nicely, you should do makeup too.”

My sister looked up at me with upturned eyes. She was probably trying to glare, but it wasn’t scary at all.

“I’ve given her so many of my makeup products, but she never uses them.”

“It’s a waste. You’re surprisingly beautiful, so you should do it properly.”

At my words, she turned bright red again and curled up like a pill bug.

“She’s not ‘surprisingly’ beautiful. Tabasa has a very well-balanced face.”

Well-balanced face. I kind of understood what she meant. The parts weren’t particularly striking on their own, but they were all small, well-shaped, and placed in the absolute best positions on her small head… like the golden ratio or something.

“But her skin tone is completely different from mine, so my cosmetics won’t work. Since we have a rare two-day weekend, I wanted to go shopping. Tabasa, you’re coming with me. I’ll buy you anything.”

Everything was being decided without asking my sister’s opinion. As expected of the Shimizu family boss. I could easily imagine her throwing her weight around at work like this.

Also, getting anything she wants is so unfair.

“By the way… I’ve been wanting some sandals…”

“Go take a shower. Tabasa, get ready.”

Mom stood up abruptly and left the living room without even glancing back.

That’s weird. Did she think I was talking to myself? I thought I gave a pretty clear hint.