My little sister is too cute, so I have to protect her!

"Nee, Yuuji..."

"Hm?"

"At first, I actually believed that you brought us here to this waterpark without any ulterior motive..."

"At first?"

"But now... I don't think I believe it as much anymore. Yuuji... Pervert."

"Fufufu... I'll gladly accept that..."

Hanako, who came in here with full confidence, is now twitching her body in front of the public bathroom in embarrassment.

As long as I can remember, I've always had one main fetish for some reason: one-piece dresses.

Doesn't that opening on the shoulder excite you?!?! Any man alive would understand this 'taste' of mine!

The white one-piece swimsuit accentuates the whiteness of Hanako's skin, making her look more like a goddess. Although she had tied up her hair, her charm is still overwhelming for me. Oh, sh*t, I just drooled. Hope she didn't notice that.

"So? Don't you have anything to say?"

She looked at me in expectation.

Since I am not an uncultured person, I knew that in this kind of situation, I should say something that is akin to a compliment for her, so I straightforwardly said:

"You're so cute, Hanako..."

"Thank y-"

"So cute that I want to lick your thigh..."

"GO DIE!!!"

Eh? Didn't I say it correctly?!?!

Well, before I found an answer to that question, I already got kicked into the pool.

"I'm here, Nii-sama~ Eh? Where is Nii-sama?"

"Nya?"

A few seconds after Hanako kicked me into the pool, Mio and Charlotte got out of the bathroom in what you all would call a "classic school swimsuit". Although it does not accentuates their charms as what the swimsuit did for Hanako, it made them look a lot cuter. All in all, I believe that I've made the correct choice.

"Ah, he's in the water already."

"Eh~ Why didn't he wait for me?"

"Mou~ Onii-chan! Why didn't you wait for us?!?!"

"Oi! It's not as if I have a choice, okay?!?! I got k-"

"You're just a mean person and went into the pool first, right Yuuji?"

"That's not something a person who kicked me should say!"

"You-went-in-by-yourself, right Yuuji?"

Although she is smiling brightly, her grip on my shoulder is overbearing. Ah~! It hurts!

"R-Right!!! I'm sorry!!!"

That seemed to be enough to satisfy Hanako as she released her hand.

*sniff* Why is my girlfriend so scary...?

***********

Anyway, it seemed that she is in a good mood today, and thus I got off with the previous incident pretty easily.

Well, trouble wouldn't have stirred up if this didn't happen, though:

"Nii-sama, Nii-sama! Let's go play in that!"

What Mio was pointing at was a giant water slide. Now, we wouldn't have a problem if...

"N-No! Definitely a no!"

"Nee-sama?"

"I-I definitely don't want to go on that!"

"Is it that... Nee-sama is scared of heights?"

"H-Hmph! Such puny height won't be able to do anything to me-"

As if she was waiting for that sentence, she immediately dragged Hanako towards the water slide as soon as she was able to confirm that the water slide won't be able to 'do anything' to her.

"Mio?!?!"

"Let's go, Nii-sama..."

"Un!"

As I see that it would be quite fun to get back at Hanako, I also helped Mio dragged her towards the water slide.

This is going to be fun for me... Fufufu...