“Little sister police?! Why is there such an awful thing?!”
“I’ll explain later! Escape! Once they catch you you’ll be sent to a little sister detention camp where the little sister sailors can oversee your correction!”
“Eh… Eeh?!”

Mana pushed back as Kotori tried to leave, confused and conflicted, until she was forcibly made to flee the area.

"Somehow you seem more professional now…”

Just as Mana was getting sick of all this, the older brother to both Mana and Kotori, Shido, passed by.

“Oh, what are you two doing?”
“Ah, dear brother…”

Mana called out to Shido instantly. Suddenly, some sort of siren rang out from somewhere.

“What? The heck is this…"
“This is bad, it’s the little sister police! They’ve heard Mana calling Shidou her older brother!"

“Your reluctant tone seems pretty miserable if I was an unregistered little sister...”

As Mana spoke, Kotori stood with her arms folded and figured it all out, and she nodded.

“You see… be careful. You might be allowed to bear arms, but it’s still illegal to masquerade as someone’s younger sister without the official documentation. Even before this law change, it was important to get the permission of the man you’re going to be calling ‘big brother’, since you only had to arrest an unregistered little sister to receive a hefty reward."

"Well, that’s how it is. My adoption was a one-shot thing; there’s a lot of unclaimed little sisters in Japan.”

Although the term ‘unclaimed little sister’ seemed awfully burdening, Mana didn’t dare interrupt.

"In, in your case you were specifically adopted into their family though… right?
“Because I wasn’t a boy.”
“Jeez.”

As Mana grimaced Kotori stared at the disbelieving girl.

“Anyway Mana, for a while now you’ve been asking pretty rudimentary questions… are you maybe not registered as Shidou’s younger sister?"

[instead of ‘unclaimed little sister’ the full term used is ‘little sister ronin’, ronin being masterless samurai]

“National law changes just for younger sisters?! You had the resources to do that kind of thing?!”
“Yes. In today’s world, as long as it’s not just you making the claim anyone can obtain a big brother or sister. Incidentally, the acceptance of certification for younger sisters last year was 20%. A five fold increase.”
“Such a low barrier?!”

Mana raised her voice, continuing as sweat dripped off her cheeks.

“Um, for that kind of thing to rise is completely unexpected, It’s only a proportion change too, and I tend to apply when a lot of those fall."

“So, it’s time to begin our work as younger sisters.”
“Hang on a little please.”

As a matter of course Kotori is diverting attention away from her breasts. Mana spoke while raising her eyebrows in confusion.

“A young sister’s job… I’m not sure the little sister role is even mine in the first place.”
“What are you talking about? Five years ago, new state law was enacted, so you no longer need certification to be officially considered someone's younger sister."

Date•A•Job Case 3:Younger Sisters