Little Sister

Accompanied by a loud voice, the door to the room was vigorously pulled open.

Looking closely, a girl had come rushing in.

Her defining characteristics were her hair tied together in a single ponytail and a beauty mark resembling a teardrop.

Although today was supposed to be a day off, she probably had come back from club activities.

She was wearing a black sailor fuku while carrying her backpack in one hand and a bamboo sword bag in the other.

Her name is Mana Takamiya, his one, and only little sister.

Having probably made a furious dash to return back here, large beads of sweat were dripping down from her forehead while her shoulders were shaking up and down.

"─Mana. Your back! Are you okay?"

A calamity called a space quake happens so he truly worried for his sister and not because of having an unknown woman in his room.

He sighs in his mind.

'I might get ready for another headache.'

On the other hand, Mana has a surprising tone.

"…Eh?"

She looks astonished at the scene she witness in this room.

There was a half-naked girl in her older brother's room, even if it were not her; anyone else would display the same expression.

"Before you take the wrong conclusion, I'm gonna say that she is someone I saved…"

"…"

Mana looked alternatively between his and the girl's faces.

He sighs inwardly.

'It seems like she didn't believe me.'

Then, after a moment of silence, she slowly walked towards him.

"Pon!"

She gently placed her hand against his shoulder.

"…It's alright. Mana is Nii-sama's ally so I really don't care if you bring another woman to your room but next time lock the door."

"Like I said—"

Before he could talk, she shuts the door, making a loud bang noise.

If he let her misunderstanding linger for a longer time then this might never end so he immediately chased her.

…

Although it takes some time, he was able to clear her misunderstanding… or so he thought.

"You only brought her back here because she was alone, am I right?"

"Yes."

"Is that the truth?"

"Yes."

"So, where did you kidnap her from?"

"From the— wait! as I said before when I was caught up in the explosion earlier, I found her."

"What you are saying is the same thing as kidnapping her!"

Mana angrily took a deep breath before talking out her favorite bamboo sword from her bag, Dorōmaru, against him.

As he hurriedly raised his hands in a panic, the bamboo sword stopped mere inches from his forehead.

After calming down, this time, it takes half hour for him to fully clear her misunderstanding.

He briefly described his encounter with the girl and clarified the circumstances that brought them here.

After listening, Mana made a "hmm..." sound as if gesturing in deep thought while quietly glancing in the direction of the girl.

"To be sure, if considering Nii-sama has not struck his head or seen a hallucination..."

"You're still considering the possibility of me lying."

"Nii-sama wouldn't tell Mana a lie, since you're Mana's Niisama."

As he was about to stagger out a sentence, Mana replied back in a pronounced manner.

It really seemed that it was impossible to determine whether or not this little sister believed in her older brother.

"Anyway, if you think with that premise, there are too many abnormalities. Who is that girl and why would she be at such a place?"

"Who knows?... Even if I were to ask such a thing."

As he replied back with a troubled face, Mana sharply focused her line of sight on the girl.

"...Could it be that this child caused the explosion? Is that possible?"

"I already thought that might be possible,—"

"─Achoo"

Without noticing earlier, Shinji and Mana heard a lovely sound coming over from the bed.

It seemed that the girl had let out a sneeze.

Speaking of which, although the girl was dressed in a coat, she wasn't wearing any clothes underneath that.

"Are you alright?"

"Aah yes, what are you going to do now Nii-sama? It can't be helped. Mana will bring some of her clothes, so please wait─"

"... Aah..."

At that moment. Just as Mana was about head to her room, the girl stared intently at Mana while her nose was sniffling.

Then, at the next moment, light particles surrounded the girl as a sailor fuku, with the same design as Mana's, materialized onto her body.

"Wha…..?"

"Huh…..?"

After being faced with such a supernormal phenomenon occurring right in front of them, Shinji and Mana looked at each other with stunned expressions.