He had meeting in ten minutes.

Three calls lined up.

Emails waiting.

And yet-

''...Tua''

The name slipped out quietly.

Unintentional.

Arnold leaned back in his chair, staring at his laptop screen...

That question hadn't left his mind since morning.

He had lived in that building long enough.

He knew the residents.

The routines.

The patterns.

And Tua-

was never one of them.

So when did he move in?

Or-

Did not not?

His jaw tightened slightly

The image replayed again.

Tua-

Laughing

Leaning on someone eles.

Walking out without even looking at him.

Like he didn't exist

Arnold's fingers tapped once against the table.

And that guy.

Unfamiliar,

Arnold didn't like unknowm variables.

He picked up his phone.

Paused for second.

Then dialed

''Yeah,'' he said once the call connected. '' I need something.''

A short slience on the other end. 

''There's guy name Tua - works nearby.

Another pause.

''I want basic details.''

His tone was clam.

Professional.

Like this meant nothing

''No,'' he added after a second, eyes narrowing slightly, ''not official. Just what's available.''

He ended the call before any more questions came.

Arnold leaned back again.

Exhaling slowly.

Why am I doing this?

The thought came.

Clear.

Direct.

He didn't answer it.

Didn't need to.

Because the answer was already there.

Not curiosity

Not really.

Something else

Something he didn't like naming.

His gaze shifted to the window.

He said, he didn't know me

Arnold let out a quiet breath.

''Fine..''

If Tua wanted to act like a stranger.

Then Arnold would treat him like one

But-

That didn't mean he wouldn't find out.