"She's been in the Service Club that long and never had a share of Brother-in-law's blessings? That won't do at all! Let me give you a little courage!"
"And the other girls who've had a bit of close contact with Brother-in-law but aren't joining tonight's event... heh heh."
"Momo! If you mess around like this and Big Sister and Brother-in-law find out, we're done for!"
Watching Momo fiddle with things at random while giggling like a pervert, Nana, who had the same pink hair, piped up to warn her.
Unlike Momo, who was barefoot in a white camisole dress, Nana wore an outfit similar in style to a magical girl's, with white pantyhose over her slender, shapely legs. The ends of her pink spiral twin tails were dyed indigo.
Strictly speaking, tonight's Service Game was being hosted by the two of them, Momo and Nana.
After all, they were both Lala's younger sisters, even if they hadn't received Hachiman's aid yet.
It was only that Nana couldn't stop Momo from running wild.
The hot-spring convention Play segment they'd originally planned wasn't supposed to go like this.
There were doujin storylines to trigger, sure, but they were meant to trigger one after another, in order, with everyone keeping Brother-in-law company and having fun together.
With that many people, there was no way to run all the storylines at once. For most of them, the people who hadn't had their turn yet had to act as NPCs.
Take the Rem and Ram cosplayers. They only got their turn when a maid was needed. They weren't supposed to all charge in at once like now.
And it wasn't only charging in together. She was even dragging in people who hadn't been part of the event at all.
This was way too chaotic. With that many people swarming him, Brother-in-law probably wouldn't even be able to tell who was cosplaying who.
"I'm not really messing around. I'm just changing the order of events a little, to heat up the mood first."
Hearing the worry in Nana's words, Momo kept adjusting the data for the various parts of the hot-spring inn area without so much as turning her head.
What was there to worry about? She was trying to make sure everyone had fun, so that nobody would feel too restrained at seeing so many people.
"Heat up the mood..."
Hearing Momo make excuses like that, Nana didn't even want to keep calling her out.
If she hadn't seen how much fun Momo was having, she might have believed her a little.
"Nana, are you scared?"
Momo stopped her slender fingers on the keyboard and turned to look at Nana, who was always trying to get in her way.
When other people were around, Nana had always acted like she didn't much like Brother-in-law, and even in front of Big Sister she'd reluctantly called him Brother-in-law.
Yet now, with just the two of them, she was calling him Brother-in-law so naturally.
"Why would I be scared? I just think it'll be a real problem if we make Big Sister angry and she tells us... tells us to go back to the royal palace."
Nana scratched her cheek awkwardly, deeply worried about what lay ahead for the two of them.
Big Sister was so good to Brother-in-law and cared about him so much. If they stirred up trouble behind his back while he was playing the game, it was obvious whose side Big Sister would take.
Considering how much Big Sister liked Brother-in-law, she thought being sent back to the royal palace would be getting off lightly. It was more likely that Big Sister would leave them to Brother-in-law to deal with.
And if Brother-in-law dealt with them... could there be any other outcome?
They'd definitely end up trained like those girls in the Service Club!
She didn't want to start wagging her tail the second she saw Brother-in-law!
"Relax. As long as we're doing this for Brother-in-law's sake, Big Sister will never punish us."
Momo glanced at Nana, who was worrying for nothing, and promised her with full confidence.
"And you don't need to worry about Brother-in-law at all."
"Apart from the first time, when we were caught peeping in secret, have you ever seen Brother-in-law make a move on us himself?"
After empathizing that many times, how could she still not understand who was really leading, Big Sister or Brother-in-law?
As long as Brother-in-law told them to stay, Big Sister would never make them go back.
"But... will Brother-in-law really be happy if we do it like this?"
Seeing how firmly Momo meant it, Nana still hesitated.
What she actually wanted to say was that she wasn't worried about being sent back. She was worried that her willpower wasn't strong enough, and that she wouldn't be able to stand Brother-in-law's punishment.
And could this even count as doing it for Brother-in-law's sake?
Brother-in-law wasn't doing anything out of line himself. It was all the other girls throwing themselves at him. If they pulled this stunt, they were bound to get dealt with.
"Nana, which do you think is better, our Big Sister or the others in the Service Club?"
Momo hadn't felt like explaining so much to Nana at first, but it seemed a waste to leave Nana standing there imagining things, so she thought for a moment and put on a serious look on her little face.
"Big Sister is the strongest and the best, obviously. So many people in the Service Club are using the tools Big Sister made. Without her, most of them wouldn't even have the right to watch from the sidelines."
Nana answered without hesitation. Who could have contributed more than Big Sister? Not even the Elf Princess Iris, who had forced so many of the Service Club's little cliques to band together.
She was a little puzzled herself right now, but Big Sister really had fallen for Brother-in-law at first sight and put in all that work without a word of complaint, and yet she rarely hogged Brother-in-law for herself.
"Exactly. Our Big Sister is the best. But Big Sister has no authority in the Club. Everyone knows the Elf Princess better than they know Big Sister. They only know her inventions are amazing, and they don't really realize what place Big Sister holds at Brother-in-law's side."
Seeing that Nana wasn't that dumb after all, Momo nodded in satisfaction.
"Momo, do you mean... we should uphold Big Sister's standing? But that's..."
Nana hesitated. She didn't quite get what Momo was driving at, but she could feel that Momo was aiming for something big.
Making a mess in Big Sister's name would surely get them lectured even harder afterward.
"Don't let the Elf Princess's looks fool you. Iris has plenty of selfish motives. She approached Brother-in-law for the elves' sake from the very start. She's not like our Big Sister, who fell for him at first sight."
"It's just that Brother-in-law's strength and abilities went far beyond what the Elf Princess imagined, so she gradually increased her investment and brought her own elves over to serve Brother-in-law together. She's even pushed down Brother-in-law's childhood-friend twin sisters, until they had no choice but to find others to team up against the Elf Princess."
Momo pressed both hands on Nana's shoulders, stared into her eyes, and repeated seriously.
"Big Sister is the one who gives selflessly, who thinks only of Brother-in-law, who loves Brother-in-law the most."
"In this house, in this Service Club, is there anyone who loves Brother-in-law more than Big Sister? No. No one!"
"But just because Big Sister doesn't fight or grab doesn't mean what she gives should be taken for granted."
"We're Big Sister's younger sisters, so from now on, we'll manage the girls around Brother-in-law for her."
"We'll make them know Big Sister's contribution! Make them know how great Big Sister is!"