"The wrong element to pressure me with..." Yukiin remarked, casting his eye on the pipe and its flow with an expression commonly used for children who step out of line in some minor but humorous fashion. How was water going to prevent him from doing anything? It was well within his domain of influence, changing the chemical composition of water was step one out of several dozen to manifest his ice after all and since it was natural water he didn't even need to knead in elemental chakra to produce it himself. In fact...it would actually be quite helpful if he wanted to accelerate this process.
He had no intention of picking through hundreds of bricks just to find internal contents, it was easier to just break them all open and see if they contained what he was looking for and to promptly replace the damaged components with more ice so the structure of the room wasn't too heavily damaged...well, if that was a concern it wouldn't be flooding so maybe he could just skip that step. It was the same as he'd said before, the easiest way to win a game of Shogi is to not play by the rules in the first place.
Yukiin pressed his hands together, several slow, deliberate, seals assisting in the process of molding and generating the chakra he needed to use for this task. It would've been easy to make a small amount without handseals, it was innate after all, but for something this large he didn't want to risk any accidents and preferred to take the 'traditional' route. Energy from the body was drawn out with energy from the soul, intermingling the two in their proper ratio before guiding it through its network and out through the shinobi's mouth. A buffet of bitter biting air slithered out of the boy's mouth, curling and coiling currents of glistening ice attacking the faucet like a hungry swarm and converting it into more of itself, stretching out the frosted infestation over the walls until the entire room was coated. The crackle of ice soothed the boy once it had finished, taking a couple minutes to manage as he chose to favor efficiency over speed by allowing the water to come in and be usable rather than to create it with his own chakra, but he was far from finished.
He spread out his arms, guiding the ice to pull itself out much like an iron maiden, a room full of inward facing spikes, a cluster of them for each brick much like the spikes he'd held in his hand but which he had discarded to perform his seals. Yukiin smiled to himself, "Anything for success, even massive property damage."
With a shattering crack the piercing spears that faced towards him punched into the bricks like a jack hammer, puncturing and shattering the brick's faces as the ice fell away in one smooth burst. The room was coated in fine red brick dust and silver ice, Yukiin gathering it all up with a swoop of the hand into a small, condensed, sphere that hardened and was set down at his feet. If he wanted to replace the damage retaining the materials would help but he'd be doing this building a favor, his ice was much stronger than its original components. He wondered if the instructor had caught onto that fact yet, he'd gone blow for blow against metal with it, but somehow failed to account for the fact tha-
The pipe groaned, angrily, roaring like an animal as it vomited out its contents.
Scratch that...some consideration seemed to have been made because shattering the room produced a torrent of water that he found himself knee deep in. Yukiin spread out his chakra, taking command over the situation by converting it all into spreading ice, holding back the tide by force as he directed Tsurara to gather up the revealed keys. The pressure of the water trying to punch through and devour him was...uncomfortable. It felt a lot like holding back a tiger with your bare hands, and since he could only ignore so much of chemical law the amount of ice produced continued to increase and he could only compress it so far. At some point it would become too much and it would spread to him.
Thankfully that didn't come, with the coins extracted by the puppet's icy claws digging them out of their revealed hiding locations, he went to insert them into their container and paused. It would've been a lot easier to just break the key container open...this entire plan was needlessly excessive...why hadn't he just done that? Why the more complex, less efficient, plan? He chastised himself and agitatedly retrieved the key from its resting place.
With that in tow the water wasn't stopping though and he'd pretty much given up on fixing it if the instructor and the boy on the intercom, whoever that was, were happy to flood and trash the place...instead he'd have fun with it. With a thrust of the shinobi's arms the ice wall that had by now filled up about half the room was pushed out, smashing through a section of the exterior wall before Yukiin allowed it to revert to water.
If he'd aimed correctly, and he usually did, this would be creating a rush of water exiting the room from the pipe through this newly created release hole...right above the instructor's head. Yukiin hoped they liked cold showers because this was going to be a bitingly cold shower.
[WC 934]