Four of the sextuplets were out of the house - probably gambling at the pachinko parlor or betting at the horse races - leaving the two most "normal" siblings in the house. Choromatsu sat under the kotatsu, reading his favorite in the peace and quiet of their home, while Todomatsu was in the corner, phone plugged in while he scrolled down Pinstagram. He couldn't help but notice that there was a lot of Nyaa-chan as he scrolled, raising an eyebrow with curiosity. Seeing that his phone was adequately charged, he'd unplugged it before crawling over to the kotatsu, holding the screen out to Choromatsu with the same smirk that he always wore.

"Ne, ne, Choromatsu-niisan, check it out! Nyaa-chan's been trending recently~ Do you think she's finally become a big idol~?"

"She's… she's already a big idol, Totty. But yeah. She really has been trending recently..."

There was a strange glimmer in Choromatsu's eyes as he said that, and it'd creeped Todomatsu out, causing the younger brother to shiver. Something about that statement made him think that Choromatsu was thinking indecent thoughts. Backing away from his brother, he'd returned to the corner where the outlet was, eyes thinning with suspicion before he'd returned his attention to his phone. He'd just wanted to strike up a conversation with Choromatsu, but what was he expecting from the otaku of the sextuplets?

Todomatsu just finished eating his instant ramen for the night before he'd headed back upstairs, the dimness of the hallway being broken by a singular beam of light that emanated from the room. He'd heard the shuffling of feet from the room, figuring that it was just Choromatsu getting comfortable under the kotatsu. Of course, he hadn't expected what he was going to see once he'd slid the door open. Choromatsu casually looked over at Todomatsu as the younger brother walked in. However, the same casual look was not mirrored by the pink-sweatered sextuplet, his face instead taking the form of shock and disgust.

There's… There's a sex doll on the floor… dressed as Nyaa-chan…

"CH-CH-CH-CHOROFAPPYSKI, WHAT THE HELL!"

"What? Oh, this? This isn't anything. "

How is he so casual about this?

Choromatsu had started stripping the clothes off of the lifeless toy as Todomatsu watched, stunned in place by how Choromatsu was not showing even the slightest bit of remorse or shame. The awkwardness of it all was thick enough for Todomatsu to be able to stab himself in the eyes with it, but that blessing was not bestowed upon him either. He'd thought about trading his brothers for his sanity back, but perhaps that wouldn't be enough at this point. As these thoughts were rolling through the youngest sextuplet's head, Choromatsu was already folding the clothes into a nice pile, smiling as if not a single thing was wrong in the world. Of course, the next transition was even stranger.

"So, Totty, can I ask you a favor?"

"... What?"

"Yeah, this sex doll isn't very exciting… Can you try these clothes on?"

The balls on this guy.

"... ARE YOU CRAZY? CHOROFAPPYSKI-NIISAN, YOU TRULY HAVE LOST YOUR MIND."

"I'll compensate you for your work."

Todomatsu froze. Now money was involved. Of course, Choromatsu could have been lying, but he had a track record of being the most responsible of the sextuplets, which meant he definitely had money to spare. If Osomatsu made the same offer, then Todomatsu would have declined immediately. The very existence of the sex doll in the house meant that Choromatsu was more financially savvy than the rest of them. More dots connected in the young Todomatsu's mind, which eventually came in the form of words.

"... How much are we talking here?"

"You can use Totoko Two here whenever you want."

He named it Totoko Two. He not only has no shame, he's completely lost his sanity.

"I wouldn't just ask anyone else this, Totty! You're the only one I can rely on!"

Choromatsu's desperation was showing in his eyes and that alone was enough to make Todomatsu uncomfortable. However, he couldn't help but wonder. Virgins like the sextuplets were hard-pressed to resist even a fake pussy. Honestly, he wasn't having much luck with the girls lately, either. If his older brother was really that desperate, maybe it would be best to milk this for all it was worth.

"... I want 20,000 yen and for you to never speak of this to anyone, too."

"Deal."

HE DIDN'T EVEN HESITATE.

Todomatsu immediately regret his first offer, but now he was in a bind. If he backed off now, this shameless man would probably gab to the rest of the brothers about this. At the same time, he went through with it, would he be able to live with himself? Something as shameful as cosplaying Nyaa-chan for his perverted brother? His whole body was shaking, tensed up from the thoughts that were filling his mind. In the end, the only thing that got Todomatsu into a safe thought process was that he was just going to be putting on the costume and nothing else.

Sighing in defeat, he'd reluctantly held his hand out to Choromatsu for the costume, his eyes thinned like daggers. There was still a part of him that couldn't believe he was doing this, but at the same time he just wanted to get it over with so that he could get his money and maybe a go at Totoko Two while the others were still out. Without much hesitation, Choromatsu had placed the clothes into Todomatsu's hand, the edges of his lips already starting to glaze over from his drool. Todomatsu had noticed this and winced a bit, disgusted by how his older brother was reacting, but also expecting it. Taking the clothes, he'd waited for Choromatsu to leave the room, but was met with the dead stare of the green-sweatered individual.

"Can… you leave so that I can change?"

"What for? We've seen each other naked already anyways. Just change. Go ahead. No biggie."

Oh, God, that's fucking creepy, Chorofappyski-niisan. Who the fuck did you get this from?

Not having much choice in the matter, the younger brother began stripping, taking off his sweater and setting it aside, the rest of his clothes following suit as he'd put on Nyaa-chan's top and skirt, noting the pair of panties that were also with the costume. Gulping, he'd looked over to Choromatsu for some form of guidance, but was met with a gaze of excitement and lust. No help at all… Todomatsu's eyes glazed over in a dead stare back at Choromatsu as he'd opted to sliding the panties on, fearing that the wrong move would bring about the lack of payment along with the shame of being told on to the other four. Before too long, he'd put on the pair of cat ears that came with the suit and looked at the tail that came with the costume, noting the beads at the end of the tail…

"I'm… not putting the tail on…"

"That's fine. You look great, Totty, really!"

A wave of relief washed over him as the realization that he didn't have to put on - or rather in - the tail settled in his mind. Finishing off the final touches by sliding a pair of knee-high socks on, Todomatsu leaned back against the floor and stretched himself out against the tatami mats, pulling all the stops to try and get Choromatsu to be satisfied. He'd even looked up at his older brother and let off a small "nya" at the end of his stretch to really play it out. What he hadn't noticed, however, was that Choromatsu had already pulled his dick out and had commenced fapping. Of course…

"H - Hey, that wasn't part of the deal!"

"Did I say that? Well, just go along with it, Nyaa-chan. Just a little bit and it'll all be over, promise."

I guess that's his hint for me to get in character? This is so bothersome...

"... O - Of course, Choromacchan~ Y - You can do whatever you want…~ Nya…~"

As Todomatsu was finally settling into being in this costume, he'd realized that Choromatsu was taking his sweet time and now the youngest brother was getting fearful that the other four would come back while they were doing this. If that happened, he would never be able to live it down. His fist clenched as he held it against the floor, trying his hardest not to just punch Choromatsu hard enough to knock him out and to get out of this situation. He needed his virgin of an older brother to hurry up…

"H - How are you en - enjoying the show, nya…~?"

"Can… I kiss you, Nyaa-chan?"

IS HE SERIOUS? HE SERIOUSLY HAS NO SHAME. KILL ME NOW.

Without even waiting for an answer, Chotomatsu was already upon Todomatsu, pursing his lips in preparation for the kiss. Todomatsu was in too much shock to fight back and was being pinned down by the horny otaku NEET, eyes widening from the situation he was in. Choromatsu's eyesight was clearly focused on his lips and the closer their lips were getting, the more Todomatsu could feel and smell Choromatsu's heavy, excited breath. He wanted to puke, but then that would only make it worse.

"Your lips look so soft, Nyaa-chan…"

In the next moment, their lips met and Todomatsu couldn't even let out a retort. The feeling of Choromatsu's chapped lips against Todomatsu's much more refined, soft and pillowy lips was enough to make the pink-sweater boy cringe. He'd fought every feeling back though, trying to think of better things like the hot chicks he'd be kissing later in his life and not about the fact that his own brother was so delusional that he thought he was kissing an idol. Meanwhile, Choromatsu was caught up in his own fantasy world, making out with the idol of his dreams and enjoying every moment of it. His lips were pressed against Todomatsu's so passionately, and he couldn't resist allowing his tongue to slide out from his own mouth and glide over the smooth feeling of Todomatsu's - no… Nyaa-chan's lips. Caught in the heat of their kiss, Choromatsu began to more eagerly stroke his erection and his tongue pushed between Totty's lips and into his mouth, gliding against the lithe, warm tongue of his dream girl.

Todomatsu was speechless and he most definitely wasn't enjoying this. In his pride, though, he held on. Trying to ignore the feeling of Choromatsu's slimy tongue against his own, Todomatsu's hands gripped at the skirt he was wearing, trying to hold onto whatever reality to distract from the moment. It was hard to think about anything else, though, since his mouth was filled with the taste of NEET and… alcohol…? Was Choromatsu drunk?! It would certainly explain a lot, and maybe that flavor was helping too… It was better than thinking about the fact that he was making out with his own brother.

The otaku brother was really getting into it before he'd lost the strength to hold himself up and he'd pulled himself off of Todomatsu, taking several deep breaths. There were streaks of saliva flowing from the edges of his lips as he'd licked his lips with a grin. His cock was throbbing in his hand as he'd continually stroked it, having clearly enjoyed the kiss enough that his member appeared to be harder than before.

"How was that, N - Nyaa-chan…? Did it feel good?"

"I - It's not like I was doing it for you…! Y - You forced yourself onto me, n - nya!"

While Todomatsu meant that seriously - despite the "nya" - that was enough to get Choromatsu even more raring to go. To him, that response was the most perfect way that he'd imagined that Nyaa-chan would react. While Todomatsu was just trying to display his disgust, Choromatsu was just getting off to it. His penis twitched with anticipation as the older brother reached his hand down to hold Totty's head, fingers interlacing with the sextuplet's hair. Another throb as he'd drunkenly thought about what to do with that mouth next.

"And we're not even close to done, Nyaa-chan…"