By the way, it seems my sister was also looking forward to today, just like me.
She said she had a lot of fun spending time with Aisaka before, and she seemed eager to talk with Agatsuma, whose face she doesn’t know yet. Maybe she was looking forward to today even more than me?
“I never thought I’d be looking forward to meeting my little brother’s female friends… It’s almost like I’m getting excited over my brother’s girlfriend.”
“They’re not my girlfriends”
“I know that. I only know Aisaka-chan, but I won’t say that such a wonderful girl couldn’t be with someone like you. You’re a brother I’m proud of, and I wouldn’t find it strange if a beautiful and considerate girl like that was your girlfriend.”
“……………”
So sometimes, could you please not say things that make me embarrassed…?
“…Ah”
“Oh, they’re here”
The intercom rings, and my sister and I head to the entrance.
As we thought, it’s Aisaka and Agatsuma who have arrived, and both of them look somewhat nervous.
“H-Hello!”
“…Hello”
“Yo, you two”
But don’t worry, you two… I’m a thousand times more nervous than you are.
Even though there was an accident, when Aisaka came to the house before it was already an event, but this time it’s even more so.
“Welcome, Aisaka-chan, and you must be Agatsuma-chan?”
“Ah, yes…! Excuse me for intruding… Are you Masaki-kun’s older sister?”
“…You’re cute”
Hmm… It seems my sister has taken a liking to Agatsuma at first sight.
By the way, I definitely heard you whisper “They’re huge” when Agatsuma bowed, okay? Sure, they’re huge, but they’re nothing compared to yours, sis!
(…Ah, this is nice)
It’s not the first time I’ve seen them in casual clothes, but there’s a charm different from their uniforms… Moreover, since it’s summer wear, the amount of skin showing is substantial, and in Aisaka’s case, even though I know it’s just fashion, the slight glimpse of her cleavage is very sexy.
Agatsuma isn’t as bold, but her size alone, being even larger than Aisaka’s, makes her combat power too strong.
“Let’s continue our conversation in the living room”
We can’t stay in the entrance forever, so I invited the two to the living room and served cold tea.
Aisaka and Agatsuma drank their tea, quenching their thirst, while silently staring at me… I guess they’re nervous, which in turn makes me feel awkward.
“Still… I never thought the day would come when Kai would invite two girls to his house. You never know what might happen.”
“You keep saying that… but I really do think so too.”
“Ah, haha…”
“…I’m surprised too.”
Probably, but I’m definitely the most surprised, or rather, it feels the least real to me.
The tension between us didn’t ease up for a while, but thanks to my sister’s presence, who wasn’t an outsider, the conversation soon became continuous.
“And that’s when Masaki-kun helped me. My grandpa and grandma said they’d never seen a young man like him before, someone who truly cared about me.”
“Oh, is that so! I’d heard bits and pieces, but hearing it directly from Agatsuma-chan makes it so much more meaningful!”
“Um… Onee-san?”
“It really does have a different weight to it!”
My sister seemed to be enjoying Agatsuma’s story, but she was taking advantage of sitting next to her to fondle her ample chest.
Rather than just touching, she was lifting them from below. She’s really taking liberties just because they’re both girls…!
(Damn it… I’ve been holding back on using my partner, and yet…!)
That’s right… I’ve been restraining myself from doing whatever I want.
It’s not because I had that dream and I’m being considerate, but simply because both I and my sister were looking forward to today… so using my partner to take that time away from my sister would be wrong no matter how you look at it.
“Saika seems to be having fun.”
“Is that… what fun looks like?”
While Agatsuma and my sister’s conversation heated up, Aisaka and I were watching from a little distance.
“She looks like she’s really enjoying herself… I’m sure Saika was looking forward to meeting Masaki-kun’s sister too.”
“Hmm.”
“But… she’s definitely your sister, Masaki-kun. The part that draws people in, the likable part, is very similar.”
“Huh? That sounds like you’re saying I’m likable?”
“That’s exactly what I’m saying. After all, Saika and I are getting along so well with you, aren’t we?”
“……………”
I quickly averted my gaze from Aisaka.
It was just to disguise my embarrassment, but Aisaka saw right through it and poked my shoulder while giggling.
“Are you embarrassed?”
“Shut up…”
“Hehe♪”
She keeps poking my shoulder.
What is this interaction… What is this sweet and sour moment… It’s like a page right out of youth.
(Damn it… The fact that I find even this kind of interaction fun or pleasing probably shows how little experience I have with girls… I’m too simple-minded.)
But maybe that simplicity is good right now… Because feeling happy about this helps erase the fear from that dream.
“So! It’s a bit boring to just have four young people sitting around the house, right? You’ll probably go to the beach or pool when summer vacation starts, so let’s all go swimsuit shopping together!”
“What do you mean, ‘So’!?”
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I hate to say it myself, but while I was having that emotional exchange with Aisaka, my sister suddenly said something completely out of the blue.
Of course, Aisaka and I were stunned, and even Agatsuma sitting next to her looked dumbfounded… Geez, it’s a brother’s duty to stop his sister’s foolish actions, so I need to get this situation under control.
“That sounds great! We’ve become good friends with Masaki-kun and Saika this year, so why don’t we all go together?”
“Oh, you’re inviting me too? I’m so happy!”
“Come on, Saika! You want to show off a cute swimsuit, don’t you?”
“Yeah, that’s true.”
“……………”
Um… Is this flow leading to us actually going swimsuit shopping?
Leaving me confused, the conversation progressed this way and that… and before I knew it, we were visiting the swimsuit section of a bustling department store.
“…How did it come to this?”
In my line of sight, Aisaka, Agatsuma, and my sister were looking at swimsuits.
Their excited chatter was a bit overwhelming, but seeing them and my sister getting along so well filled me with a sense of emotion.
(Hehehe…)
Phew… it’s been hard to keep my facial muscles in check.
Although I wondered how it came to this, I can’t help but grin when I think about Aisaka and Agatsuma saying they want me to see them in swimsuits.
“This… is it just strings?”
“That’s a bit too sexy, isn’t it?”
“If you wore that, you’d look like an AV actress.”
I overheard some words that I couldn’t ignore, but for now, this was turning into idle time for me, so I decided to space out.
(There are so many types of women’s swimsuits…)
It’s not that there aren’t different types of men’s swimsuits, but women’s swimsuits have an incredibly wide variety… There are simply different shapes and designs, and they’re overflowing with options.
I was so focused on the array of swimsuits that I rarely get to see or visit normally that I didn’t notice someone coming up to me until they tapped me on the shoulder.
“You’re looking pretty intently.”
“I… I just got caught up because I don’t usually come to places like this.”
“Right, right, let’s go with that.”
This damn sister… Should I tell her that with her childish body, a school swimsuit would be enough!?
“Huh?”
“I’m not thinking anything~”
…I really can’t think bad thoughts.
My sister, who was glaring at me slightly, took my hand and made me stand in front of the fitting room… And finally, it was time for the reveal!
“Ta-da!”
“…How is it?”
“Whoa…”
I showed an honest reaction to Aisaka and Agatsuma who appeared.
Both of them were wearing bikini-style swimsuits, shamelessly revealing their flawless skin and ample chests.
Aisaka looking confident and Agatsuma fidgeting shyly.
Now that they’ve shown themselves, as a man, I should give my honest opinion without holding back.
“…It’s super amazing.”
Right after saying that, I felt ashamed of my shallow comment.
“That’s it…?”
My sister’s words, accompanied by a cold stare, stabbed right into my heart.

“Hehe, thank you, Masaki-kun♪”
“…I’ll go with this one.”
“They look great, don’t they? They really suit you both and show off your charms well. Especially you, Agatsuma-chan… You’re really something else.”
“Ah, uh…”
At my sister’s words, Agatsuma tried to cover her chest with her arms, but of course, that level of coverage didn’t hide anything at all… In fact, her arms made the shape look distorted and even more obscene, causing me to reflexively avert my gaze.
(But good job, sis! I’ll praise you just for bringing out this side of Agatsuma!)
Well, in an instant, the two of them decided on their swimsuits.
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