My Little Sister Is Too Cute, So I Have To Protect Her!

Only after Mio left to apologize to the customers for a while have I realized a crucial thing...

'Holy sh*t! My pride as a brother is finally coming back!'

A streak of manly tear flow down my cheek. Finally... Finally, I've become a brother!!! I made a fist from my right hand and punched into the sky in exhilaration.

"Uh... Nii-sama, what are you doing?"

"Whoa!!! Why are you back so quickly, Mio? Have you done apologizing to the customers yet?"

"O-Of course, Nii-sama!", she replied to me. However, during her reply, she refused to look at me straight in the face.

"What happened."

"N-Nothing..."

"..."

"F-Fine! I-I may have punched a customer or two, okay? I-It's not much of a deal, is it?"

"Mio, you..."

I don't even know what to say anymore. As I started to walk down from the roof, my phone vibrated, signalling that someone texted me.

[Yuuji. No need to come back to the kitchen anymore. Spend time with your sister and be sure to keep an eye on her, okay? B-But don't get too lovey-dovey with her, okay? If not, I will definitely be mad!!!

-Hanako]

...

I'm speechless. What did my sister even do down there?

But I still don't understand the part about being lovey-dovey with her though...

***********

"Nii-sama, Nii-sama! Let's go into that booth!"

Mio enthusiastically dragged me around the culture festival. Her cheerful attitude dispelled all the gloominess surrounding her earlier. Her dark eyes are now sparkling with enthusiasm. However...

"Mio..."

"What is it, Nii-sama?"

"Uh... You know that you don't have to help with the cafe right?"

"Un!"

"So why are you still wearing the maid outfit?"

"It's actually very simple, Nii-sama!"

"Enlighten me."

"You like it, don't you Nii-sama?"

*Poof*

The contents of the takoyaki that I've been chewing in my mouth were suddenly flying through the air because of her ridiculous explanation.

"See? You can't deny it yourself, right?"

"M... Mio... Let's just keep it to ourselves, shall we?"

"Why, Nii-sama? Everyone already knows that you're a siscon right? Not only that, you are also a big lolicon! Why are you still trying to conceal it, Nii-sama?"

"Shh, Mio!"

"Mama~ Why are we walking away from that Onii-san?"

"Aiko... That Onii-san is a lolicon, okay? And remember what I taught you? Lolicons are dangerous, so stay away from them!"

I even heard conversations like that emerging from the crowd around us. I feel like crying now.

"Nii-sama!"

"Hmm?"

"Teehee☆"

For the first time in my life, I really want to punch my little sister right now. Her mischievousness is just over the charts...