Welcome to my secondary fic, Boundless World of Danmaku: The Noodle Incidents! This is an accompanying fic to Boundless World of Danmaku, so you'll have to read that to understand what happens here. For the readers of BWD, this is an expansion on what happens when no one's looking. For instance, what Cirno was doing before Reimu showed up, the day-to-day life of the Myouren Temple, little things like that which I felt needed a little more life.

For new readers, just sit back and enjoy the ride!

Note: Chapters of Noodle Incident will be slightly shorter than chapters in BWD.

Now, for this chapter's situation (for those of you who are lost): Cirno caught wind of a certain doctor's shady new drugs and a rumor that one of them can make you incredibly smart. Naturally, being the nineball that she is, she decides she wants whatever the others are going on about, because it must be good. And so, taking Daiyousei with her, the nineball has begun her infiltration plan of Eirin's clinic...

– TOUHOU –

"Cirno-chan, this is a terrible idea."

"Hush, Dai-chan! Soon, I'll get my hands on that doctor's new drugs, and I'll be the smartest and the strongest! Kekeke!"

Daiyousei groaned in despair as her friend broke into another quiet evil laugh, then gasped and clamped her mouth shut as a bunny hopped by. It looked at the bush they were hiding in quizzically, but turned around and hopped away rather quickly. Daiyousei let out a sigh of relief as it disappeared from sight. "We almost got busted…"

"What's the problem with that?" Cirno protested rather loudly. "What could a few bunny rabbits do to the strongest?"

"Never mind." The last rabbit hopped out of Eirin's clinic, sniffing the air tentatively before hopping away after the other rabbits. Why did that NEET even keep so many of them? "Oh, they're gone. But before you do anything, Cirno-chan, at least–"

Whoosh!

"Check… first…" Daiyousei sat down on the nearby tree stump, sighing. 'Why did she deal with Cirno?' some people asked. They never did get a response. It was something her big sis told her to do, to keep an eye on the Misty Lake since that vampire moved in, but then Cirno wandered in and decided to live there. If it wasn't for sis' words, the greater fairy of the lake probably would've throttled the ice fairy by now. After all, there were perks to being the sibling of a monster like –

Daiyousei coughed quietly, breaking her own train of thought. She'd leave the exposition on that for another time. She realized it'd been exactly nine seconds since Cirno went charging in. Why hadn't anything started exploding yet…?

"Oh no…" Daiyousei's eyes widened as she flew for the door, wrenching it open and throwing herself inside. If Cirno ever made a plan that didn't fall apart in nine seconds, it could only mean bad things.

Sure enough, when the lake fairy finally found the ice fairy, she noticed a faintly glowing red vial in her hands. "Cirno…"

"I found it!" Cirno danced about a little as she hugged the little vial close to her, careful not to smash it. Calming down a little, she tugged off the cap and drank it all in one go, throwing aside the empty bottle without a care. "Now, people will have to admit that I'm the best at everything!"

Clink.

The discarded vial tapped off of someone's foot ever so lightly, her red-blue dress shifting as she stooped to pick it up. "Experiment 93…" Eirin Yagokoro whipped around to stare at Cirno, who was dancing once more. "No! Number 93's effects weren't clear enough for me to dilute them! It's not even tested on Reisen yet!"

"W-what are you talking about?" Daiyousei was rather cowed by the normally impassive doctor's outburst.

"Oh no oh no oh no oh no oh no…" Eirin rocketed past her, pushing Cirno to the ground as she flung open the cabinet behind the ice fairy, searching feverishly for the counteragents. "Where'd I put it!?"

"Um, Eirin-san, what's wrong?"

She pointed a finger at the nineball who was still dancing. "That's the problem! I haven't had a chance to balance the dosage of what she just drank!" She went back to the cabinet, barely sparing each vial a half-glance before tossing it wildly behind her.

"What's the doc going on about?" Cirno finally stopped laughing.

"Cirno, what'd you drink?" Daiyousei looked at the ice fairy, terrified at the prospect of her friend metamorphosing into something horrifying.

"I drank a smartifying drink, Dai-chan!" Cirno clapped the other fairy on the back. "Cheer up, it's not like there's supposed to be a limit! The strongest can take on any overdose and walk away!"

Just then, something happened. Cirno abruptly stopped moving, a look of shock and terror on her features. "What the…?"

A thin layer of ice spread out rapidly, covering every exposed surface of the room, as Cirno began to shake. Eirin looked up, having found nothing of use in her cabinet. "Daiyousei, run!"

"But Cirno is–"

"There's no time for that!" Seizing the fairy by the back of her neck, Eirin barrelled out the doors, easily kicking them down and rolling away, coming up with her bow in hand. Her tone having turned grim, she explained. "I found my old notes on Vial 93."

"What does it do…?" Daiyousei didn't really want to know.

"Enhances conscious thinking to roughly 450% of normal capacity." Eirin watched her clinic slowly grow over with a layer of ice. "And…

"Increases physical and magical capabilities by over 900%."

As if on cue, the roof of Eirin's clinic splintered like matchwood, a colossal pillar of energy lashing out as the summer air instantly plummeted to below zero, a blizzard instantly forming in the area. The pillar of light faded, but the snowstorm continued to rage, battering at the two with biting temperatures. As snow began to form on the ground, Cirno stepped into the open.

Her closed eyes slowly opened, revealing her eyes had turned to a shining, glowing blue. Her six icicle wings had condensed and connected into a single pair of wings that still floated just above her back. The fairy's hair had grown out rapidly, falling from shoulder-length all the way to her waist. The dress she always wore had been altered slightly, the ice it was formed from shifting and clicking quietly as she moved. Rather than the full dress she'd once wore, it'd been modified to instead resemble a cross between a longcoat and a dress, with a second, smaller black dress under it. Her iconic ribbon remained in her hair, as well as the pink neckerchief around her neck. Instead of bare arms, she now had a pair of detached sleeves to cover them, almost identical to the red-white miko's. Her shoes had been traded away for a pair of dark blue boots, a set of black thigh-highs underneath them.

She sighed in relief as she flexed her wings, savouring the feeling of a proper set of wings. Made with precise, almost snowflake-esque design, they were deceptively durable. Stretching a little, she smiled at the astounded doctor. "Thanks for the medicine, Eirin-san. Now you know what it does and I get to keep its effects."

Coming out of her shock, Eirin snapped back to reality. "Look here, Cirno, you're not keeping its effects. I need you to stay here until we find the cure for it. It might have unintended side effects to boot."

The ice fairy giggled at that statement. "You say it like intelligence is a plague. I'd rather enjoy being capable of sentient thought for a change, thank you."

She raised a hand in front of her own face and flexed it, frost twinkling on her fingertips. "I think I need to test this power…"

Stretching her wings again for a moment, she took to the skies. Daiyousei came out of her reverie and began to fly after the fairy. "Cirno, wait up!"

Eirin turned around and looked at the ruins of her clinic. It'd been torn to pieces by Cirno's change, and it'd probably take forever to clean up. Good thing she's been closing up before Cirno got in. Sighing, the doctor called out, "Reisen?"

A rustling of leaves, and Reisen ran into the clearing. "Eirin-sama, what do you need? What's… wrong…" She trailed off as she stared at the devastation left by Cirno. "Eirin-sama, do I have to tell Kaguya-sama that you've been playing with shady drugs again?"

Eirin flinched. "N-no, I just need your help cleaning this all up."

Reisen stared at her. "Riiiiiiiight…"

– TOUHOU –

The nineball flew to a stop a ways away from the Scarlet Devil Mansion. "Hmm… that gate guard's sleeping again. Might as well wake her up." Dismounting the tree she'd landed on, Cirno walked over to the sleepy Meiling and poked her in the stomach. "Wake up, Meiling-san."

No response. The little nose bubble refused to pop. Cirno tried stomping on the girl's foot. Nothing. She poked an icicle into her ear. Zip. Kicking her in the side. She just rolled over and went back to sleep. Cirno sighed and gave up, walking past the sleeping guard. As soon as her foot landed past Meiling, she shot up like a rocket, eyes wide open as if she'd never been sleeping. "Halt, intruder!" Then she blinked as she stared at Cirno. "Um… you're that ice fairy, right?"

"Yes. And you're sleeping on the job."

Meiling shrugged. "I can still wake up on my own, you know! The only person who gets past me is that witch, and I don't think anything can keep her out."

"Somehow, I doubt that," deadpanned Cirno. She made to take another step forward, but suddenly found Meiling blocking her path. "Hmm?"

"I'm sorry, Cirno, but I'm afraid I can't let you do that." Meiling smiled grimly as she adopted a defensive stance. "Please leave the premises or be escorted out by force."

Cirno reached up to her own wing, snapping off a branch and instantly regenerating it. In her hands, the icicle expanded and warped, transforming from a mere hunk of ice into a jagged sword, almost as long as Cirno was tall. Running a finger along the edge, Cirno giggled quietly. "A spell card duel, then? For the right to pass?"

"You've never won one of those," scoffed Meiling.

"You've never fought me as I am," countered Cirno. A swipe of the sword, and Meiling was sent reeling.

Shaking it off, her hands began to glow with chi. "You've gotten a lot stronger since a month ago, huh?"

"You could say that." Cirno hefted the sword across her shoulder. "But I think you should just let me through… Chi-na."

A blur of movement, and Meiling's swipe kick was intercepted by Cirno's raised hand. The youkai tried to push away Cirno's guard, but the fairy simply flicked her wrist, twisting the martial artist into an extremely painful position. In the back of her mind, Cirno noted that one twitch could've dislocated every single joint in her body simultaneously.

Meiling's tone was incredulous and pain-wracked as she tried to break free. "How did you… learn that?"

"A little birdie told me, I suppose you could say."

Crack!

Cirno gritted her teeth in pain as she forced her shoulder back into place, Meiling's palm strike having instantly snapped it out of its socket. The gate guard got up quickly, wringing out her joints. "Whew, that was quite the grip you pulled off; I never saw it before. Who taught you that, anyways?"

Cirno extended her wings, slamming them into the ground and sending a wave of ice out at incredible speed. Before Meiling could even react, she'd been trapped by Cirno, the ice having immediately scaled her legs and frozen her to the floor at the knees. "I taught myself."

Smash!

Meiling found herself upside-down in the mansion wall. Pulling herself free, she leapt out again. Cirno leaned back, Meiling's energized fist barely skimming an inch over her face. Reaching up, Cirno wrapped an arm around Meiling's own and whirled, bending the joint into a horrible position. Taking advantage of the youkai's split-second moment of pain, Cirno generated an icicle and plunged it into Meiling's back. The gate guard gasped once and fell, Cirno dropping her unceremoniously.

The ice fairy smirked as she watched the temporarily paralyzed youkai struggle to rise. "Don't bother; that icicle I put in you? It'll sever a few nerves in your spinal cord, so you won't be going anywhere for a couple hours. Well, maybe minutes if your regeneration is good enough and the ice melts away. Even so, it'll be plenty enough time for this." Raising her sword into the air, she pointed its tip at the ground as she declared a spell card. "Drown Sign – Sub-Zero Waters."

A flash flood, formed from ice and instantly melted, swept away Meiling, refreezing even as it crashed against the outer walls of the Scarlet Devil Mansion. As Meiling was embedded in the wall once more, a flash of light surrounded her, and Cirno's deluge was instantly frozen once more, sealing the gate guard in the ice, unable to move at all. Of course, there was just enough holes in the ice to allow her to breath. Cirno wasn't a killer. However, it was also dense enough to completely prevent her from moving at all.

The gate guard stared furiously at Cirno as she sauntered by easily. "Oh, by the way, you might get freezer burn in there. Such a shame. Nonetheless, at least you have an excuse to nap for a few hours. Knock yourself out."

Meiling raged impotently at the fairy from inside her prison before settling down. Actually, the ice wasn't that cold, and it blocked out the sun a fair bit. Maybe a nap wouldn't be such… such a bad… idea…