Lean Tuna and Her Stepbrother's Plan to Become a Fatty Tuna Chapter 7

I still have two more chapters for this series, and then I want to focus on the Dying Duke’s Daughter for a bit.

TL: clover

ED: clover

Perhaps he wanted to do lewd things soon, but Soutarou had quickly washed the dishes twice as fast as the usual speed and dumped the dishes.

As I sat on the sofa and watched the TV for a while, he finished cleaning up the dishes and came over with an imposing stance.

"Well then, shall we do it?"

Soutarou, who had a vibrator in his right hand and a rotor in his left hand, said with excitement.

I saw Soutarou, equipped with toys like a dual-sword wielder, with terribly regretful feelings.

"Hey, Soutarou. Aren't you a bit too excited?"

Although not by blood, we are siblings! And so, where did that person who had common sense go?

"Because, I had decided. I will eat the meal in front of me deliciously."

"You said that with such an intimidating expression."

"Eh~, but the one that was so enthusiastic about this was Nee-chan, right? Because of that, didn't you prepare my favorite food?"

"Yeah, well, that's true."

It was me who wanted to become a toro woman, and I was the one who roped Soutarou to help me.

However, right now Soutarou was the one who felt motivated and did everything without any hesitation.

"Then it's fine, right~. Come one, let's get right to it."

"You're too excited."

"It can't be helped. I, I had a delusion about Nee-chan all day today."

"Eh–……?"

My cheeks twitched slightly to the words of Soutarou.

"But it's your older sister, you know? A flat-chested woman, you know? Is it really that exciting?"

"It's still exciting for a virgin. Don't underestimate a healthy high school male's sexual desire."

"Is that so?"

"Really. That's why, you should take your clothes off quickly."

Seeing Soutarou grinning in excitement, I got up from the sofa reluctantly.

"Take them off here? This is the living room."

"Don't mind it. There is nobody anyway."

"If mom and dad knew that us siblings did lewd things in the living room, they would cry."

"That, their reactions would be the same even if it's not the living room, so there is no problem."

I thought that was true, so I reluctantly took off my clothes.

Soutarou's gaze struck me, as I tossed off my autumn cardigan and removed the blouse buttons.

"Take them off quickly."

When I heard it, I tried to say - it's hard to take off - but then I remembered his words that told me to practice to take off my clothes as if showing off.

As if showing off, huh.

Deciding about what to do, I stood at a position so that Soutarou could see me well and removed the buttons one by one. After removing all the buttons and beginning to pull out the blouse, I still hesitated a little.

After removing the blouse, my light blue bra was exposed.

"Nee-chan, aren't you bolder than yesterday?"

"Because…Soutarou said I must take my clothes off as if showing off."

"You obey it earnestly."

To my words Soutarou smiled happily.

"Because it's necessary to become a toro."

As I said so, I unfastened the hook of my skirt.

With this, only the underwear and socks were remaining.

Soutarou who fixed his gaze on me, was wearing his shirt and sweatpants, it could be said he had complete defense.

"I feel it is somewhat unfair to be the only one with unprotected figure."

"Eh, what, Nee-chan, you want to see me naked?"

"No, I don't particularly want to see it."

"Well then it's good. Because this is Nee-chan's practice, I don't need to take my clothes off."

That was true, but Soutarou was full-clad, I was embarrassed that I was the only one naked.

When I reached behind me for the bra hook while feeling unsatisfied with that answer, Soutarou restrained me.

"Ah, don't take off your underwear."

"Huh? Why?"

"I think that it's better not only to feel pleasant when being stimulated directly but also from above the underwear, so I will stimulate you through your underwear first."

That being so, Soutarou switched on the rotor that he had in his right hand.

The motor sound resonated in the room.

Soutarou, who instructed me to sit on the sofa, sat on his knees on the floor and put his body between my knees.

"That, you're going to use it?"

"Oh yeah, I bought it for this."

Soutarou smiled widely, and pressed the trembling pink elliptical object against my chest through my bra.

"Nnh!"

"Oh, a good reaction?"

Small vibrations were transmitted to the tip of my chest, and my body trembled.

"Is it pleasant?"

"……Rather than pleasant, it's frightening, itchy, and feels weird."

"Oh, but your breathing becomes a little rough."

As Soutarou said, my heartbeats were much faster than before and my exhaled breaths were rougher.

I knew I was getting aroused.

"Nn, but, it may be slightly different from feeling pleasant."

If I did getting aroused, I thought that it was because this situation was also arousing.

I was half-naked on the sofa in the living room where I normally watch TV and relax, and Soutarou was pressing a rotor against me.

Surely, if my dad and mom saw me like this, they would faint.

Yuuto too, he wouldn't think that I would do such lewd behavior with my younger brother.

When I thought that I was doing something immoral, my heartbeat naturally became faster and my consciousness was concentrated in the rotor that was tracing my chest.

"You said it's not pleasant, but your nipples have become harder."

Just as Soutarou said, the tips of my chest stood up inside my bra, pushing against my bra.

Seeing that my small breasts were reacting, Soutarou relentlessly pressed the rotor against that part.

Because I was aroused, my chest became more sensitive than before, and I began to feel the stimulations more finely.

The sound of the rotor stimulated my ear.

"Nn, ahn……nnh."

"A little voice is coming out. Has your sensitivity increased?"

"Nnh, I don't know."

Although it was over my underwear, and even though the stimulation was far from strong, the tip of my chest became warm and hot as it was given stimulation all the time.

"S-Soutarou. This, please stop."

"Eh, why?"

"Somewhat frustrating, it makes me feel strange. My chest is trembling."

"……But Nee-chan, right now, your expression is awfully lewd. I don't think it's because you're feeling unpleasant."

Soutarou pushed the rotor against my chest, then he licked his lips.

"You don't understand? Your cheeks are pink, I keep thinking that you're a toro. Even your breath is rough, it's awfully erotic."

"Erotic? Does that mean sexy?"

"Yup, sexy. I said that Nee-chan doesn't have any sex appeal, but I take it back."

Then, Soutarou set his hand atop the cup of my bra and shifted it sideways.

The pink nipple which had become swollen and plump was exposed, and the rotor was applied directly to its tip.

"Aaaahhnn!"

After being teased over my underwear, suddenly I was given a direct stimulus.

I let out a loud voice and arched my body.

"Nee-chan, that's a good reaction. Until yesterday you were troubled that your voice couldn't come out, now you seem like a different person."

"Fuuah, nnnh, yaaaahn!"

Soutarou laughed satisfactorily while pressing the trembling machine at the tip of my chest.

I myself was a bit puzzled about my reaction.

I was rather bad at letting out my voice, and I had never felt this much stimulation.

However, right now I was reacting to the vibration rubbing the tip of my chest, my head turned white and my thoughts flew.

"Hyaah, So-Soutarou, that, the stimulus is a little bit too strong."

"Really? But this vibration is still on the medium level."

"Lie! Nnnnnhh!"

Tears gathered at my eyes due to the stimulus.

"If you like it so much, I have bought a lot."

Soutarou reached behind my back, unfastened the hook of my bra and removed it.

As he began to rub my small chest that was spilling out with his palm, he reached for the cardboard box filled with toys with the other hand.

"What are you going to do next?"

"Yup. I thought about how to raise Nee-chan's sensitivity."

That said, what Soutarou took out of the box were soft handcuffs and an eye mask.

"After all, it seems that when the vision is blocked in a state where you cannot move, your senses will become sensitive, right?"

As I looked at the objects in the hand of Soutarou who was laughing, my cheeks twitched.