Lean Tuna and Her Stepbrother's Plan to Become a Fatty Tuna Chapter 9

Last chapter of this batch. This is the turning point for Amane. And well, let’s see how it goes. After this, I will focus on my only R-15 series~

TL: clover

ED: clover

After that, I cum four more times with the rotors and fingers.

The rotors affixed to my chest trembled moderately and it became really painful.

I cried and begged for forgiveness, and when I was finally released, I put on my clothes in a zombie-like state.

When he removed the eye mask and handcuffs, gradually I turned back into a human-like state.

"I wanted to develop even the inside."

"I really beg your forgiveness for today. It's impossible. I'm already at my limit."

"Don't decide your limit by yourself. If it is Nee-chan, you will be able to cum again!"

When I scowled at Soutarou as he gave a motivation speech, he dropped his shoulders dejectedly.

"Aah~~, I bought a vibrator at great pains, though."

"That's not my problem. I didn't ask Soutarou to buy it."

"I bought it for Nee-chan. If we don't develop it properly, you couldn't become a good toro, right?"

"Oh yeah, that may be so."

"Besides, if there is no vibrator, we can't develop the inside. I mean, you don't want me to sneak my way inside, right, Nee-chan?"

After being asked by Soutarou, I turned my eyes to his lower body.

The thing of Soutarou was insisting heavily in his pants.

The retort of Soutarou.

I imagined it and my face turned red.

"I-i-i-impossible! I mean, after all that kind of thing is not good!"

Even now, we were at our very limit. The very limit as an older sister and a younger brother.

Crossing that limit, would probably be unacceptable.

Beside that. I asked my younger brother to develop me a little, and I felt like it was too late to say something like this now, but I still thought that such actions should only be done with the people we like.

I thought myself which mouth said it, but the last line was still important.

"I will concede that vibrator is okay. But, it's impossible to insert the thing of Soutarou!"

"……That's right. Yeah, I knew that."

When Soutarou nodded, his shoulders dropped with a slightly disappointed expression.

Looking at the downhearted Soutarou, I felt a little guilty.

Perhaps I said terrible things.

If I thought about it, I felt terribly pleasant, but Soutarou didn't even take off his clothes.

It seemed that Soutarou's thing was standing up even in his pants.

Even though his opponent was a frozen tuna woman, if we did this kind of thing, it would still feel arousing for a virgin.

Probably…it was painful, wasn't it.

I didn't understand too well about the psychology of a man, but Yuuto said that after it stood up, that means he felt horny and wanted it to be taken out.

I wondered if Soutarou was feeling horny.

It made me feel a bit guilty that Soutarou cooperated with me but I neglected him like this.

"That, it's not good to insert it……but, shall I do it by hand?"

"Eh?"

To my offer, Soutarou rounded his eyes.

"I thought it would be painful if it stayed as it is."

When I shyly offered myself, Soutarou widened his eyes and looked at me.

"Eh, eh, is it okay?"

"Yeah. But, that, I'm not good at this."

Unfortunately, I was bad at these kind of things.

It was something I tried to do with Yuuto in the past, but it seemed that my power adjustment was bad, and it felt good right away. And then, it ended.

However, I didn't believe that.

Toro women should definitely be good at handjob too.

"Hey, Soutarou. Whether I'm good or not, please inform me, okay?"

"……O-of course. Eh, but, is it really okay?"

"Yup. As it is, Soutarou is also feeling painful, right?"

"Yeah, well. I was thinking of masturbating in my room, though."

Soutarou turned his face red and swallowed audibly.

"Well then, I will leave it to you."

"Yup. Me too, please give me guidance."

When I bowed my head, Soutarou started to loosen up his pants.

I felt a bit nervous and looked at the sight.

I was already naked, but this was my first time to see Soutarou's body.

"Somehow, it's a little difficult to take off my pants if you keep looking at me like that."

Souarou stopped his hands and turned his face red as he looked at me.

"Eh. You have a habit of looking at my body though."

"That's because what I see is visually pleasing."

"What's with that. I will also see it."

For me to be the only one humiliated, it felt somehow frustrating.

When I grabbed the strangely bashful Soutarou's trousers, I pulled his pants downwards at once.

"Ah, wait, hey!"

Along with Soutarou's irritated voice, the thing of Soutarou appeared before my eyes.

Looking at it standing up towards the ceiling, I reflexively widened my eyes.

"Eh, eh, so big?"

"Idiot, Nee-chan what are you doing!"

Soutarou raised his eyebrow while turning his face red, but my line of sight was fixed at the thing of Soutarou.

Soutarou's thing was slender, but it had a delicate atmosphere…

It was a wonderful penis.

"Nee-chan, it's embarrassing if you stare so much."

"Eh, ah, aah, sorry!"

I hurriedly turned my eyes away from it.

My heart was somewhat pounding faster.

Somehow, Soutarou in my mind had a small image, but…it was bigger that Yuuto's.

"Soutarou, you are getting bigger."

"Nee-chan, is that your impression after seeing my penis?"

"No, here, my image of Soutarou is when you were in elementary school."

It was when I was a junior high school student and Soutarou was a primary school student when my father and his mother got married and we became siblings.

At that time there were various things, and somehow Soutarou had a very young image in my mind.

As I said that, Soutarou frowned at me unpleasantly.

"Elementary school student, that was when I was still an unreasonable brat."

"Yup, that's right."

"Do I still have the image of such a brat for Nee-chan?"

Looking at Soutarou who was complaining with sharpened lips, I shook my head in a hurry.

As one would expect, calling an 18-years-old young man as an elementary school student was impossible.

"That's not it. I think that Soutarou grew wonderfully."

I told Soutarou that as my eyes lowered to his lower body fleetingly.

"Yeah, I'm an adult man already. Please confirm it properly, Nee-chan."

"Confirm it?"

"Didn’t you want to make me cum?"

Soutarou smiled mischievously and grasped my hand and guided it to his lower body.

I touched Soutarou while feeling a bit flustered. Soutarou's shaft was hard and warm, it was pulsing a little.

My hand gently crawled on that part, and lightly grasped it with my fingers.

"Uh, Nee-chan, that's a bit too strong."

"Eh, really? What about this?"

"Well, maybe you can put a little more strength."

"L-like this?"

I adjusted the strength of my fingers while checking the reaction of Soutarou.

"Oh yeah, that much. Maybe you can be even weaker."

"I hardly put any strength, though?"

"It's okay, so put your fingers around here."

As Soutarou told me, I let my fingers slide through the shaft of Soutarou.

While searching for the reaction of Soutarou, I slowly moved my hand.

"H-how about this? I'm bad at this. Are you feeling good?"

"Yeah, it feels good. You're not bad at all."

"But, I'm not good either."

"Yeah, well, although it's not good. But, just because I'm being touched by Nee-chan, it feels amazing……"

Soutarou's face turned red and muttered under his breath. I tilted my head a little.

"What. Does Soutarou also like the feeling of doing something immoral?"

"……Eh? Ah–, well, that's right."

What, then, he's the same as me, huh.

I felt a little bit happy and made the movement of my fingers a bit faster.

"Around here, is the reaction good?"

When I traced around the muscle with my fingers, the body of Soutarou reacted with a slight twitch.

"Ah, yeah. That weird place, it might feel good."

Soutarou, who turned his face red and made his eyes appeared intoxicated, was somehow pretty cute.

I was happy to think that I made him feels good with my caress.

I didn't feel something like this when I was with Yuuto, what was this feeling?

There was something strange with me. It was pleasant to touch the thing of Soutarou.

When I thought that I wanted to make him feel even more pleasant, I had my tongue crawling across the shaft of Soutarou naturally.

Sucking around the back muscle and tracing with my tongue as if to stroke, the body of Soutarou jumped in shock.

"Ne-Nee-chan!?"

"Nn, it tastes a little bit salty?"

"Kuh~~~! As a frozen tuna, have you done a blowjob?"

Soutarou asked while blushing, but I shook my head.

"No, I have never done it with my mouth, this is my first time."

"Eh?"

"So I don't really know how to do it, but I wonder if it's okay with such feeling."

While asking, I let my tongue crawled on Soutarou's member.

Soutarou's body was trembling as he flushed and turned red.

As expected, Soutarou who was enduring the pleasure looked cute, and I wanted to see more of that somehow.

I would like to make Soutarou speechless.

Although I thought I didn't want to do blowjob, I didn't feel aversion this time.

I thought that it would hurt if my teeth hit him, so I rubbed Soutarou's member with my lips while making sure that my teeth didn't hit as much as possible.

I did this for the first time and I thought that it was probably not good, but Soutarou still raised a small voice in pleasure.

"Kuh……Haah, Nee-chan…!"

When I attacked the head with my tongue, some bitter things spread in my mouth.

"Nnnhh!?"

"Whoa, sorry!!!"

Soutarou was panicking as I blinked my eyes in surprise when I suddenly felt bitter things spread in my mouth.

He pulled out his cock from my mouth, snatched the tissue box on the table and pulled out a few sheets of tissue in panic.

"Sorry, Nee-chan, vomit now!"

"Somehow, I think I swallowed it."

"Eh, you drank it!?"

"Uu, it tastes somewhat sticky. Perhaps, just now, it was semen?"

I took a tissue that Soutarou had offered, and wiped my tongue gently.

Wow, even if I had wiped it, it still bitter.

I took a glimpse of Soutarou, as his dick was limp, so it probably was Soutarou's semen.

Uuuu, it was such a bitter thing.

"Sorry, I'm really sorry. Somehow, I just couldn't hold it back! I will bring water quickly!"

Soutarou turned himself around with a pale face and took a cup from the cupboard, he poured water into the cup quickly.

When I received water from Soutarou, I drank it at once.

I felt that the bitterness that had spread throughout my mouth became a little better.

"I was surprised…semen is bitter."

"Did you drink it for the first time?"

"Oh yeah, it was my first time. It was also my first time doing it with my mouth."

Saying so, as I expected, Soutarou covered his mouth with his hand and looked away.

"I'm happy, but why did you do it with your mouth?"

"Eh?"

"Even if you didn't try hard on doing it with your mouth, I could feel pleasant enough just by your hands."

"Humm."

I looked to the distance.

"After all, is it to become a toro?"

"Well, I won't say that's not one of the reason. But somehow, I wanted to do it with my mouth when I saw Soutarou. I thought that I wanted you to feel more pleasant."

I told him my honest feelings.

I was able to move naturally, it was also a wonder for myself.

"It's weird, I didn't think like that when I was having sex with Yuuto."

I furrowed my eyebrows.

I wondered why I couldn't do such thing with Yuuto.

Even though Yuuto was trying to make me feel good, I ought to work hard for sure.

Why couldn't I act like that with Yuuto, when I acted that way with Soutarou naturally?

"Nee-chan?"

"Sorry, Soutarou. I, I will return to my room."

Somehow the inside of my chest was hazy.

As I glossed over the feelings that had emerged, I turned my back towards Soutarou and went back to my room.