My Little Sister Suddenly Confessed to Me, but What Am I Supposed to Do by Dating My Little Sister? - Chapter 63 & 64 & 65

Chapter 63: The Sea Closest to Heaven

Whether by luck or misfortune, the three girls—having calmed down after that unexpected incident—spoke as they dressed in the locker room.

“Co-come to think of it, aren’t Shiori and Yuu alone together in the same room?! Asami-kun, you were suspicious of their relationship, so why did you put them in the same room?!”

Having heard that they were dating, the worry that something might happen between them tonight surged through Michiru as she questioned Asami.

“Ehhhh… Michiru-channn… it’s a bit late for thattt. After allll, the two of them are in the same house every dayyy.”

“I-I see. Then, have the two of them already… well…”

Michiru stared at Shiori’s face, her own flushing red.

“Ehhhh, Onii-chan would never lay a hand on me. In the first place, we’re currently ‘dating’ in the sense that we’re siblings, and Onii-chan even calls me his ex-girlfriend… If he laid a hand on me that easily, I wouldn’t have gone through all that trouble.”

“What do you mean by ‘all that trouble’?! What kind of trouble?!”

“Well~ all sorts of things~”

“D-dammit, it’s unfair! Alright! Tomorrow, I’ll use my swimsuit to totally captivate Yuu!!”

“Ah… about thattt. I found a really nice placeee. It was in the guidebookkk… a place that’s incredibly beautifulll. I want Yuu to see me therrre.”

“Eh?! Where is it?!”

“Umm… what was it called againrr? It said it was some islanddd.”

“An island?”

“Yeahhh. You go by boattt. I thought we could all swim there tomorrowww… how does that soundrr?”

“Let’s do it! Let’s go!”

Shiori and Michiru spoke in unison.

And so, the strange battle over Yuu had begun.

The room chime rang. Finally, my sister was back…

The moment I opened the door, Shiori lunged at me and hugged me!!

“Whoa, wait, Shiori!”

She buried her face in my chest.

“Onii-chan, sorry… just for a little bit…”

Saying that, she tightened her arms around my back.

“It’s fine, but… did something happen with those two?”

“No… the three of us were just saying bad things about you, Onii-chan…”

“Ehhh? That’s mean. What kind of bad things were you saying?”

“That you’re too kind…”

“…Is that supposed to be an insult?”

“Yeah… for us, it is…”

With that, she turned her face sideways and pressed her ear against my chest.

“I feel safe hearing your heartbeat. It makes me feel that you’re alive, and that you’re close to me.”

I wanted to say something about how strange she was acting, but the words wouldn’t come. I let her stay like that for a while, until the chime rang again to signal the end of the moment.

“It’s time for dinner!”

When I opened the door, the other two were outside, so we headed straight to the restaurant.

In the Japanese-style restaurant serving Okinawan cuisine, we took our seats at a table for four, and the dishes began to arrive one after another.

“What’s this? It’s all poppy and bubbly.”

Shiori gave her impressions while eating something that looked like green seaweed.

“That’s sea grapes (umi-budō).”​

“Then, what’s this crunchy one?”

“That’s mimi-gā,” Asami replied while looking at the menu.

“What’s a mimi-gā?” Michiru asked while eating.

“It’s pig’s earss.”

“Ehhhh! I’m eating an ear?!”

We were all enjoying our meal like that. It was obvious Shiori had been acting strange earlier, but there was no sign of a fight between the three of them. While I was wondering what that was all about, Asami pulled out the guidebook to show everyone.

“Um… this is the island I was talking abouttt.”

“No way! It’s amazing!”

“So beautiful…”

What Asami showed us was a photo in the guidebook. The blue of that sea was incomparable even to the beautiful water in front of this hotel.

“Eh? Is this a foreign country?”

When I saw the photo, the island of New Caledonia—said to be the island closest to heaven—immediately came to mind.

“Nooo, it’s Japannn. You can go there from herre.”

“It’s Japan? I thought it was New Caledonia or the Great Barrier Reef in Australia.”

“You’re quite knowledgableee, Yuu. But it’s Japannn.”

Asami flipped to the next page, which said it was 1 hour and 20 minutes from Ishigaki Port.

“1 hour and 20 minutes? That’s quite a way. Almost 3 hours round trip? Can we do a day trip?”

Since we were staying at this hotel for three days, we had to do it as a day trip. I mean, we could do it, but it seemed like a waste.

“Wellll, there are three trips a dayyy—morning, noon, and eveningrr. If we go in the morning, we can stay there until the eveningrr… so I think it’ll be fineee.”

Hmm, I feel like there’s a catch somewhere… oh well.

“Shall we go then? Are you two okay with that?”

I looked at Shiori and Michiru…

“Ehehehe… closest to heaven… with Onii-chan, in heaven, ehehehe…”

Shiori hadn’t gone to “another world”; she had gone to heaven. She probably wouldn’t be back for five minutes. I turned to Michiru to confirm, but…

“I’ll do it, I’ll do it, I’ll do it… captivate him, captivate him, captivate him…”

She was psyching herself up in her own world.

I don’t really get it, but it felt like my sister had doubled…

Chapter 64: The Sea Closest to Heaven

We decided to have breakfast at 6:00 AM tomorrow and head out immediately, then we each returned to our rooms.

As we were leaving, I noticed Michiru staring at me and seemingly intimidating my sister with her eyes, which bothered me…

Back in the room, I decided to ask my sister again about the strange behavior I’d noticed from the two of them earlier.

“Hey, Shiori, did nothing really happen between you three? Michiru’s acting especially weird.”

“Hmm, well, I guess you could say something happened~?”

“What was it?”

“Umm—I’m not telling! Lucky you, Onii-chan. Hmph. Anyway, we have to be up early tomorrow, so I’m going to sleep~”

With that, my sister went to the bed and started taking off her clothes… Wait, taking them off…?

“Whoa, hold it right there!!”

“Hmm?”

She had already unbuttoned half of her short-sleeved blouse, her bra peeking out as she turned toward me.

“Why are you changing right here?!”

“Eh? Into my pajamas… is that not allowed?”

“No, it’s not that, it’s just—I’m right here.”

“Yeah, you are.”

Saying that, she undid more buttons.

“No, no, no, no! I can see everything!”

She took off her blouse just like that, standing there in just her bra on top, then reached for her skirt.

“Do you want to watch, Onii-chan?”

She lowered her skirt’s zipper while looking right at me.

“I mean, if you ask if I want to or not, it’s not like I don’t want to, but…”

“Then you can watch~~”

She said I could watch with a tone so casual she might as well have been humming…

In the meantime, I heard the rustle of her skirt falling to the floor…

Being the coward I am, I turned my back.

“Hmm, wait, what? The hook is stuck. Onii-chan, undo my bra strap for me—”

“Give me a break, Shiori-san.”

“Ehhh… Oh, it’s off.”

If it’s off, that means right now…

“Okay, you can look now.”

“No, I really can’t.”

“I put my pajamas on—”

When I turned around at her word, she was wearing a pink camisole pajama set with frilled hems (8,400 yen plus tax, by my estimation) and short pants.

“How is it? Cute, right? I bought it just for today.”

She twirled around to show me, but I couldn’t help but be distracted by the movement of her chest, which was almost certainly braless…

“Aren’t you going to change, Onii-chan?”

“Ah, right,” I said, taking off my shirt to change into the resort wear provided by the room. As I moved to take off my pants… I looked at my sister.

“…”

She was staring at me in silence…

Hmm, what is this feeling? Well, it’s not like I’m going to be stark naked, and nobody gets a “moe” thrill from a guy acting shy. So, I lowered my pants…

“Hiii!”

I heard a strange yelp and turned around again to see my sister covering her face with her hands, her face bright red as she peered through her fingers.

I thought that was such a cliché, but her face was truly crimson? Seeing that, the sadistic streak in me began to stir.

“Oh ho? Shiori-san, are you embarrassed? Where did all that boldness from earlier go?”

“Uuuuu, because…”

She hung her head, her face as red as a boiled octopus.

Crap, my sister is cute… Come to think of it, it was the same in the Ferris wheel gondola; she’s actually quite innocent and surprisingly weak to a counterattack.

I felt like I’d finally found the way to “conquer” my sister.

“There, I’m changed. Shall we sleep?”

“Y-yeah.”

With that, we both got into bed. Separately, of course.

After turning off the light and staring at the ceiling for a while, she spoke to me.

“Onii-chan, it’s been a long time since we slept in the same room.”

“Hmm, it happened often at Grandma’s house, but we were always with a bunch of cousins. When was the last time it was just the two of us?”

“Maybe in third grade? Dad was on a business trip and Mom suddenly had to go to the hospital. When it was just the two of us, I got lonely and crawled into your bed.”

“Ah, the time I woke up to find you sleeping next to me. I remember. I thought you’d just walked into the wrong room.”

“How nostalgic…”

“Yeah…”

One of our many memories. Memories that we are still building in the present tense…

“Hey, Onii-chan… can I come over there?”

She was being bold again. I’ll take my pants off again!

“Ehhhhhh… You can’t. You’re not in elementary school anymore…”

“Please… Onii-chan…”

But her tone today, ever since the bath, had been strange. It wasn’t the usual “spoiled-selfish” tone she’d been using lately. Hearing her speak like that…

“Fine… just for tonight…”

I pulled back the covers, and she sat up, bringing her own pillow over to lie beside me.

Once she was settled and I pulled the blanket over us, her face was right there in front of mine…

Even in the dim light, I could tell her face was red and her eyes were moist.

Looking at her like that, my heart rate quickened.

“Ehehehe. Sharing a blanket with Onii-chan.”

She moved her face closer to my chest. Suppressing the lightheadedness I felt from the scent of her shampoo…

“We have to be up early. Go to sleep.”

With that, I closed my eyes.

I couldn’t tell if she was crying or smiling, but she seemed to tremble slightly. After a while, I heard the sound of her steady breathing as she fell asleep.

…My sister is incredible…

I won’t be getting any sleep tonight. I’ll just have to sleep on the boat tomorrow…

Chapter 65: The Sea Closest to Heaven

“Alright, we’re finally heading out!”

To restate: the silver-haired beauty who has recently become a somewhat “disappointing” tomboy—yet actually possesses top-tier grades and total athletic ability—Watanose Michiru, was psyching herself up.

“I’m sleepy…”

And then there’s me, completely lacking any “spirit.” Long live the ordinary. I’m not a loner, just “loner-ish.” Hasegawa Yuu (the narrator) replied.

“Umm… I got the ticketsss. Shall we boardrr?”

Lately, she’s brightened up and gained more friends. Good for you, you “traitor.” Fluffy short bob, cute drooping eyes, and she brought the tickets while her noticeable chest swayed—the slow-talking Shishui Asami.

“Ehehehehehehe.”

Ever since she woke up this morning, she’s been stuck in “another world.” Please, use those perfect skills and incredible communication power to do something about that “other world” web-novel series that stopped mid-way and is going nowhere. Long black hair, slightly upturned but large and incredibly cute eyes—my sister, Hasegawa Shiori.

The four of us boarded the boat.

The boat was so small it was barely more than a fishing vessel. We’re riding this for over an hour? I wondered.

And I hadn’t mentioned it yet, but our destination is the southernmost inhabited point of Japan. It’s called Hateruma Island, read as Hateruma-jima. For the record, Okinotorishima is the southernmost point of Japan, but no one lives there—actually, no one can live there.

When the time came, the boat departed from Ishigaki. Once we cleared the port, the sea was indeed beautiful. The boat moved normally at first, but after a while, the engine sound changed and the speed began to fluctuate.

Not even thirty minutes had passed, yet the speed was changing. Looking ahead, the helmsman—presumably the captain—was busily turning the wheel left and right.

It seemed he was trying to navigate head-on into the waves to overcome them.

Thinking it might be dangerous if a large wave hit us from the side, he appeared to be choosing his path through the swells.

I wanted to sleep, but the rocking as we crossed the waves made that impossible. Looking to my side, my sister seemed to be enjoying herself, likely just because she was with me. However, Asami was frozen stiff, and Michiru had turned pale and was staring at the ceiling.

“Whoa, seriously? It shakes this much?”

“Wow, Onii-chan! It’s like a roller coaster!”

“Ugh… I feel sick…”

“……………”

After a little over an hour of literally overcoming rough seas, we safely arrived at Hateruma Island.

“Ugh, I thought I was going to die…”

For now, it seems Michiru’s “counterattack” has been averted.

“Asami, are you okay?”

I asked Asami, who had been frozen solid.

“You seeee, when something bad happensss, I have a special skill where I can lose consciousnessss. I mastered it back in elementary schoolll when everyone was saying things to meee.”

That is a incredibly depressing special skill…

“It’s like playing possum.”

With her drooping eyes and fluffy short bob, she does look a bit like a tanuki.

“Ah, yeah, that’s righttt. Playing deadrr. Buttt, if I use this skill too muchrr, I might not come backkk… or rather, it makes me feel like I actually want to dieee…”

Asami-san, please stop. Or rather, someone stop Asami.

I checked to see if my sister was enjoying herself.

“Ehehehehehe.”

Again… (omitting the rest).

Since the three of them recovered quickly, we headed outside the port where cars and minibuses were gathered. They seemed to be shuttles for inns and bicycle rentals.

“Asami, what should we do? Are we sightseeing the island?”

“Hmm… that beach from the photo is nearbyyy. What should we dooo?”

At the very least, it looked like asking the current Michiru to pedal a bike around the whole island was a “no-go,” so that was fine.

“For now, since it’s close, let’s go to the sea and then decide.”

“Okayyy.”

So, putting island sightseeing on the back burner, we headed to the only swimmable beach on the island—the location from the guidebook photo: Nishihama Beach.

“Whoa!”

“Waaaaah! What is this?!”

“S-incredible.”

“Hoeeee.”

We arrived after a short while, but I didn’t know what to say. For someone who has only ever seen the seas around Kanto, this wasn’t even “the sea” anymore. It was so beautiful I thought it truly might be heaven. The beach in front of our hotel in Ishigaki was incredibly pretty, but this place was on another level. The transparency of the water was insane. And it was blue—all sorts of blues were swirling together.

“I’m going to swim!”

The blue in Michiru’s face turned to red the moment she saw that sea. She took off the T-shirt she was wearing right then and there.

“H-hey! …Ah, you were wearing it underneath.”

What Michiru was wearing was a deep crimson string bikini…

White skin, a face like a foreigner, and a bright red bikini. I mean, it’s cute. It is cute, but her physique is so child-like that it’s almost painful…

“Ah, she took it offrr… Michiru-channn, there’s a hidden spot further ahead where I thought we could change into our swimsuitsss.”

“A hidden spot?”

I thought this whole island was a hidden spot. Compared to the beach in front of the hotel in Ishigaki, the people here are sparse, aren’t they?

“Yeahhh. Apparently, you can see nothing but the horizonrr, and there might be no one therrre.”

“Heeh, it’s further ahead?”

“Yeahhh. Buttt, swimming is prohibited therrre.”

“We can’t swim?”

“Yeahhh. Wellll, I think it means you shouldn’t go out too farrr, but just in caserrr. Even herre, if you go deep, there’s coral and you’ll hurt your feettt… so if you swim out farrr, you need proper equipmenttt.”

Heeh, so coral is dangerous.

“Then let’s take a stroll over there while looking at the beautiful sea.”

Saying that, we all started walking.

“Eh? I’m going like this? More importantly, Yuu! Look, it’s my bikini! Hey! Any thoughts? Wait for me! Hey!”

Michiru followed behind us, complaining. Was she always such a “disappointing” character?

(My initial plan was different…)