The character isn't original, nor good.
The pacing is terribly fast.
And the story doesn't feel original either.

Together, this all makes this story very mediocre.
I was expecting him to keep himself concealed for a little longer (as in at least half the story), and have more conflict between the ponies, and him.
The cover also made me expect that.

I understand your'e new. I just feel i have to give critique, so you can improve, and make something interesting, and worthwhile.

7366810 I appreciate your honesty.

I still like it

7370014 Thank you! That's kind of you to say.

Very nice story, however the pacing could be a bit better.That's really my only complaint. Hell, it's hardly a complaint, as it's not a very significant issue. Keep writing, mate!

I wounder what will happen next keep up the good work update more on this story soon please

There are a ton of superfluous commas in this chapter. You don't have to place a comma before a character's name.

Aiden looked down to see there were various supplies on the sink, there was a razor, shaving cream, scissors, a toothbrush, hair gel, and other miscellaneous objects. He picked up the shaving cream and applied it to his skin, which proved a little difficult due to the hair. Aiden grabbed the razor and slowly worked it along his chin, slowly cutting the beard off of his face.

To properly shave your face smooth after having months/years worth of beard growth, you would first trim the beard down with grooming scissors (regular scissors or barber's scissors will do in a pinch) down to as short a length as you comfortably could (trimming the hair to a length of about a centimeter or quarter inch long) across your entire face/neck.

Now that it's trimmed down and won't clog up the razor at nearly as prohibitive a rate, you can begin shaving.
Each pass should be a short (1.5 to 2.5 inches long, or 4-5 cm) distance down the face, and the blade should be rinsed clean of hair/shaving cream after each pass.
It's time consuming, but it's the only way to do it without burning out a blade in a single shave (or having to re-hone and strop the blade half way through the shave if you're using a straight razor) if you don't want to be shaving with a really dull blade by the end of it which will cause you to be cutting your face up to finish shaving.

After you've done the whole face, feel free to shave down the finer stubble with a second pass (always be sure to shave the whole face, not trying to squeeze in a second pass during the first pass, as the longer hairs that you haven't yet shaved off in a first pass will inevitably get shaved during the second pass as well, which will cause some mild-but-noticeable extra wear to the blade that otherwise wouldn't have occurred).

I am sorry but he is FAR to trusting and the whole him saying ma'am after every sentence is rare her odd. At least to me that is but then again you might have met royalty before. Also it is my personal opinion that no human would bow to a ruler no matter how powerful they are they might salute her but they wouldn't bow.

Also your character needs to grow or keep a spine because one moment he is barley bending underneath the might of a RULER and then he is acting like a pacifist when Rainbow treats HIM like dirt for trapping her in a room because she invaded his home!

Twilight looked at him "What are you doing?" She asked with a slight blush.

"Giving you my clothes." Aiden responded while dropping his shirt and starting to take off his pants.

"B-but, couldn't you just give them to me after you covered yourself up with a towel or something?" Twilight responded while staring at him taking all of his clothes off.

Aiden shrugged "Well, I don't really care if you see me or not." He said before dropping his boxers, revealing his private parts.

Twilight blushed profusely and swallowed hard.

"You can come and get me when you're done." Aiden said before walking up the stairs.

Twilight sat there with a dumbfounded look "Wow, he's definitely going to have to get used to how things work around here."

Says the currently naked pony. Seriously, among her friends only AJ and Rarity wear clothes with any regularity, and only one of them wears something literally every day. Even then, it's a hat. Hat's don't really do much for concealing someone's junk... Most of the time anyways.
i7.photobucket.com/albums/y264/LordStyphon/other%20things/gifs/5937020-20Hubble20Scrunchy_Face20animated20applejack20liarjack20lying20scrunchy20season_2.gif

8075008
Military will salute and are suppose to to foreign leaders in certain situations

"Quite the gentleman I see, but you can just call me, Rarity. If you ever need any sort of clothes built for you then you can come and visit me, I'm always open for friends" Rarity showed her generosity.

Ummm, Built?

I like SoL stories like this. I'm getting tired of all the "action" heroes that wind up in Equestria. Like Naruto, batman, the saias, etc, etc, etc. I wish the stories would go back to the beginning, when a simple human would arrive, and have a nice adventure.

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Hes not in the military anymore, and we while we do show respect, we dont kiss asses.

RD....AWKWARD !!!!!!!!!!!!