Worst kind of fanfiction of asoiaf, I've ever read. And I have read a lot.

Yeah way to childish for me it had potential but it’s not good

Just a little too much cursing for Robb lol

shit

HAHAHAA.
I'm dying here. BLOODY BRILLIANT!

lol what's the point of hiding jon as ned's bastard if the secret is not dangerous. unless ned fears brandon's son will be the heir not his lol that's totally petty and pathetic and unned

Someone saw in bruge.

I love it!
I don't like sansa either

faggot is a modern word, at as a derogative term for someone being gay, doesn't fit here.

All in all you don't even try to get their voices right having them sound like modern teenagers instead.

Fuck that SI is an idiot, can't stand reading any more of this.

Ned wouldn't just automatically think his son is a genius.
That's not something he wouldn't have seen earlier either, instead he should have just wondered if a new Maester or something had gotten their grip on his son and ruled in the shadows, or something in that vein.

Huge changes like that, behaviour not seen before should create suspicion, not pride.

You are giving the SI a crazy amount of plot armor ignoring how suspicious he should seem to everyone.
Basically the characterisations are really off, they don't feel like real people, least of all the SI.
Or rather he doesn't feel like a person forced into that setting having to survive, and more like an internet troll arguing about how he views canon in some forum.

missing negation
by doing the one - by not doing the one

typo
and if fact - and in fact

Again, you need a proofreader.

Multiple times you wrote Rob instead of Robb

gets too - gets to

The writing is a bit sloppy, not to mention how it feels more like a neckbeard playing a game rather than someone thrown into a dangerous and unforgiving world.
You could use an editor.

Wow, he really does nothing to not make people think he's possessed or something, but instead immediately starts acting like a complete weirdo with vastly different mannerisms than Robb.

Shows such a cringeworthy lack of subtlety that I don't think he can survive in that world without heavy plot armor.