Lean Tuna and Her Stepbrother's Plan to Become a Fatty Tuna Chapter 1

Yes, another series. I will be doing the Summoned Hero and this series simultaneously. So, there won’t be a fixed update schedule. But it will be the Summoned Hero chapter first, then MaguToro. After the Summoned Hero series finished, I will concentrate on this series.

TL: clover

ED: clover

When I returned to retrieve my item in my boyfriend's room, he was in the middle of an affair.

My boyfriend Yuuto1 was a 21-year-old man who had been coming to Tokyo from the country to attend the university in the city center.

The room for a youth who lived from his allowance and part-time jobs was a 1K student apartment.

His room was small, when you opened the front door you would see a mini kitchen. There were also partitions in the back.

Since it was a one-room apartment, it was possible to see the state of his room from the entrance immediately.

His bed that was placed in parallel before the window following the veranda was a semi-double bed.

A spacious bed would make it easier for Amane to sleep together with me, right?

He was laughing in such way, but now he was naked on the semi-double bed and was pressing down on an unknown woman.

"—Ah."

His line of sight intersected with me who was still standing in the posture of opening the entrance door.

The woman who had had a look of ecstasy with a cock thrusting in right now had a deer-in-the-headlight face when our eyes met.

—Let me see. What is this situation?

I entered the entryway for the time being and closed the door so that it couldn't be seen from the outside.

Inside the quiet room, the creaking sound of the door of the cheap apartment closing was terribly loud.

"Ano, I forgot my pouch yesterday, so I come back to pick it up."

I broke the heavy silence and I managed to squeeze out that words.

Yuuto looked at me with a cramped expression.

"Aah. Pouch, huh. Pouch. I feel like it was at the wash basket."

While thrusting his thing into the strange woman, Yuuto replied.

I nodded for the time being, I went into the washing room and put the pouch that had been left in the wash basket into my bag.

My heart was beating at an unbelievable speed.

In a situation like this, I didn't know what to do.

When I came out of the washing room, Yuuto had stopped his coupling for the time being.

It seemed that he wasn't going to continue it with me in the way.

However, he didn't have time to wear clothes and he was saying something with an indescribable expression.

"Um, ano, Amane."

"—Anyway, I wonder if I can hear it. Which one is your favorite?"

His relationship with me had just reached one year.

For me, a male presence was entirely a non-existent, so I didn't really hold any feeling for Yuuto who approached me, but when he confessed to me for the first time, I was really ecstatic to go along with him.

He was a little forceful, but he took me to various places as long as it was an indoor place.

I thought that our relationship was turning out well.

"No, Amane. This is not what it looks like."

"Oh noo, Yuuto. It seems we are discovered by your boring girlfriend!"

Before Yuuto could say something, the naked woman behaved like a spoiled child and embraced him.

"—'Boring girlfriend'?"

"Yuuto didn't say anything? It isn't fun to be with you!"

"Oi, Momoka!"

As the woman was snuggling to Yuuto's body, Yuuto quickly rebuked her.

However, she laughed and stuck out her tongue, stroking the back of Yuuto as if seducing him.

Yuuto remained unmovable.

"Recently, sleeping with you is bothersome. I was with him a great deal number of times."

"Is that true, Yuuto?"

Certainly, in recent months, the number of times Yuuto took me out had decreased. Even though there were days where we went out to play, the number of days where we didn't have increased, and the mood to stay in Yuuto's room also becoming scarce.

I wondered if what she said is true.

"No, that's why that kind of thing is—-"

"Is it because this person was here that you don't want me to stay here?"

Yuuto who looked troubled and his line of sight was wandering, suddenly raised his voice in defiance.

"It cannot be helped! Amane, you, you're too bad at sex!"

My thinking ceased to the content of the words yelled by Yuuto.

Bad at sex!?

"I don't know whether you were feeling pleasant or not since you never raised your voice, never give me service, and you never move by yourself-!"

Like a broken dam, streams of words were yelled out by Yuuto.

"You're a frozen tuna! A 100 yen lean tuna! If a man continuously eats such a cheap meal, it would be inevitable that he wants to eat an exquisite fatty tuna!"

I was feeling awkward due to the words of Yuuto and stepped back a little. My back hit the entrance door.

The fatty tuna woman who was called an exquisite meal seemed to relax and shook her plump tits, smiling in triumph and embraced Yuuto.

I instinctively looked down to my own body.

I was flat-chested, and I had a lean tuna quality.

"U, uwaaaaaaaaa!!!!"

To the tremendous defeat, I ran out of Yuuto's house while shouting with a miserable voice.

1 The kanji for Yuuto is 遊人 which could also be read as Yuujin (playboy). So the author named him that deliberately lol.

This series’ title is actually a pun: 赤身マグロと義弟のトロ計画

赤身 (akami) is lean meat, マグロ (maguro) is tuna but also a slang for a dead lay,トロ (toro) is fatty tuna and in this series means a person who is responsive at sex.

So it could mean a lean tuna’s plan to become a fatty tuna, or a dead lay’s plan to become a responsive-at-sex person.

By the way, after this chapter, I will call the ‘fatty tuna’ as toro. Example: I will become a toro!