My beautiful sister-in-law who is only attached to me, and my childhood friend who just made her high school debut, barged into my house?

–Ni ni, where are you going?

–Niini, take me with you.

–Niini, I’m scared of Kaminari.

She always grabbed the hem of my clothes and followed behind me. She was shy and often hid behind my back.

She was always close to her older brother, timid, and a crybaby. Erika was that kind of sister.

It’s not that she couldn’t make friends.

Erika’s gorgeous red hair was foreign to the eyes of small children, so bullies tried to exclude her.

So it’s only natural that she would become so timid.

A small existence that must be protected.

Yes, that’s how it should be.

However, last night he suddenly saw the body of a girl who was in the process of maturing, and it seriously shook Shota’s vow emotions.

Fluffy and swaying.

Getting swept away by his raging teenager hormones?

‘You can’t do that, can you?’

That’s no good.

Didn’t I just reaffirm to myself that I would protect her just yesterday?

It’s very painful to betray those expectations. It’s hard to breathe. I feel like I’m drowning. I can’t breathe. I need oxygen.

“――Puhah!?”

“Ah, you woke up.”

“…Erika? Um…?”

“Good morning, brother.”

“Ah, yes, good morning, Erika.”

Feeling physically suffocated, I opened my mouth to gasp for air, and all of a sudden, Erika was in front of me, looking into my face.

Erika was in a good mood and poked Shota’s nose with a finger while slightly lowering the corner of her eyes.

Checking the time, it was already 10.30. Although I couldn’t sleep that well, I rested for a good amount of time. I guess she came to wake me up.

Erika was dressed in a cami dress over a cut-and-sewn top, a calm and neat outfit which she wouldn’t have any problem heading out in.

The situation of being woken up by a girl this fashionable and pretty still didn’t seem realistic to me. In contrast to me, who was dressed in my nightgown, I felt a little out of place.

Recalling last night’s incident, my cheeks began heating up.

In the midst of all this, Erika tells him in a matter-of-factly

“Hurry up, Mii-chan says she wants to clean up breakfast quickly.”

“Well, wait a minute.”

“…Brother?”

Shota reflexively grabs her arm as she tries to leave the room, saying that’s all she needed.

As Erika tilted her head and wondered what’s going on. Shota couldn’t find the words to solve this matter delicately, so without beating around the bush, he just blurted out what he had been on his mind all night.

“I-I’m sorry about last night.”

“Oh!”

Last night.

At those words, Erika’s cheeks turned slightly red, averting her eyes in agitation.

Even though she pretended that everything was normal, it wasn’t as if she didn’t care about what happened last night at all.

Shota felt guilty about how he saw something he shouldn’t have seen, and he rapid-fired out a couple of excuses.

“Well, it wasn’t intentional. I didn’t know you were in there, so it’s my fault for not paying attention.”

“I know that it’s not okay, even if we used to bath together.”

“I’m sorry that I saw it, rather I was surprised to see your figure looking so girlish and beautiful, unlike when you were a child.”

“Brother.”

“Yes!”

t seems that I was stupidly honest and said too many unnecessary things.

Erika’s face turned redder as I went on until she could no longer keep silent.

She pulled her hand away from Shota to her chest, puffed out her cheeks and said one devastating word.

“Idiot.”

After saying that, she ran out the room, not being able to bear the embarrassment any longer.

After she ran off, Shota stood still for a bit before collapsing onto his bed, writhing in agony.

“Oh god! Just kill me!”

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