Stealthy and with all the finesse in the world or not, he was still not on his home turf. So of course...
Avoiding being watched completely was never an option. If he truly wanted full secrecy, doing this sort of thing in the wilds of Arashi no Kuni would have been the best option. This place was more so for convenience's sake.
Lugging all of those materials far away would be impractical... and for this specific construction, he needed ready access to a forge. While he worked, a pang entered his head. Chakra, and with it an unfamiliar presence of some sort. Lights above him flickered, the feeling of being watched flooded his senses, and he turned on his heel.
Only to find an imposing figure standing with its back turned to him.
"No chakra." He thought to himself, at least none that he could feel coming from it directly.
"...a puppet, then?" A guess, but a safe one from what he could tell.
Armed, armored, and seemingly unconcerned with him. Its immaculate make contrasting the still-in-progress metallic behemoth that he had been working on. The wanderer stood alert, but made no moves. Even as the windows in the building were shuttered tight and the lights began to waver again. A figure at the corner of his vision, the closing off of exit routes... it was like something from a horror novel. Yet as always he remained stoic.
If he was fazed by the showing, his face did not show it. By now his mind was racing as it usually did when faced with a questionable circumstance. Could he escape from here? Likely. But not quietly and probably not without a fight of some sort. Not to mention that he did not know
who he would be running from. And beyond that, his puppet was here. Too much time and effort had been spent piecing this thing together, forging its sword, and planning for its creation. Whatever else happened he could not leave the unfinished thing behind. And so...
The young man waited and watched, wondering who could be behind this.
"Someone with authority, no doubt." He thought to himself. Though having met the Rokudaime... this did not seem like his style. It was at once too covert and entirely too theatrical for a man who approached him and simply asked what his business was.
"Hm..."Before he could ponder it much further the hum of a lift being activated sounded out and a voice called to him, drawing his attention away from the armored figure. Squeakers, or what looked like him stood in the opened elevator. Speaking more seriously than he had ever heard him.
"Expected by whom?" He asked, but with another flicker the figure was gone.
"If this is a trap it's already sprung." The thought occurred.
"Might as well play this out." So he approached and entered the lift. Pausing for just a moment to look for the armored figure once more.
It was gone. The wanderer remained silent as he pressed a button and the elevator moved. Whoever was pulling the strings here seemed to want to meet. And with his only other option being a hectic retreat... he decided to oblige.