Title:
I feel like the title is just another version of an Assassin's Creed game (I think It's a game...or a movie... or something in between) which isn't very original. I looked up the word "Subsist" which means, "maintain or support oneself, especially at a minimal level" and I think that maybe the title Subsist could be a title by itself, without the 'assassin's creed' part, because then it's a more eye-catching title since not everyone really likes Assassin's Creed.

It could make people avoid clicking on the story - I know I wouldn't want to read about Assassin's Creed or something based off it heavily which I am going to assume that this is. So I do think Subsist would fit as a better title since it's short and simple and sounds different compared to most titles I see.

Description/Foreword:
First thing I noticed was the green text - why is it green? It's kind of distracting when colors are used, especially for me, and black is better for giving off a more 'professional' look to it as writers usually don't use colored text (with minor exceptions, of course). There's minor grammatical errors, I've corrected everything with red.
Key:
- Things that need to be added are underlined in red.
- Things that should be changed are underlined and italicized in red.
- Anything that should be removed, is crossed out in red.

"In the modern days, a girl named Elena looked like any other person. But little did that society know, she's a modern day assassin. Not a hitman or a hired killer, (remove comma) but a follower of the Assassin's (add an apostrophe) Brotherhood. For hundreds of years, the assassin's and their nemesis, the Knight Templars, (add a comma) have fought. Their fight has always been surrounded by the Pieces of Eden, powerful weapons that will end any attempt of peace. But in the 21st century, the assassin's (add an apostrophe) has grown weaker. The Templars easily adapt with the surroundings, such as building a company named Abstergo Industries. It was up to the Brotherhood to stop the vicious plans of the Templars. (remove period) but in the rising power of the Templars, can they?"

I changed some things because they sounded odd at times and there were periods, apostrophes, and commas in the wrong places/missing.

As for the foreword, I'm kind of put off by the pictures since they don't really need to be there since characters should be introduced by name, and usually looks, within the story. I do find it quite odd that all the characters aren't just idols since this is asianfanfics and no one knows who these people are and... frankly, I'm sure a lot of people don't care about non-kpop idols on this website (with several exceptions, of course).

As for the description itself, I'm just going to assume it's based off the game/movie/whatever it happens to be. Since these characters seem to be taken from existing characters, as far as google tells me. Like the name Dorian.

Plot:
I'm not seeing much of a plot, I just feel like I'm... kind of reading an Assassin's Creed story from one of the games or something. I guess the plot's conflict is the battle between, uh, the Templar and the Brotherhood (I really don't know anything about this game...). It's not really original and I don't really know why Krystal is even tagged because she doesn't fit in the fanfiction and I feel like it's just an OC with Krystal as a faceclaim as I stated below.

This doesn't really seem like a fanfiction that would fit on a site called asianfanfics due to the fact that there's really nothing Asian about it; the characters don't seem Asian (including Krystal, honestly), it seems to focus more on the... Uqab(?) guy as of right now and the OC, it's an OC really, with Krystal's faceclaim really only shows up once or twice in the first chapter and once in the second. Yes, fanfics are sometimes based off of movies and games but all of the characters are usually Korean (/Chinese/Thai/whatever else is in K-pop bands) idols that people can distinctly point out. I feel like this would fit better on AO3, a site for anything, or fanfiction.net - also for everything.

Writing Style/Flow:
My main question is why does it go from 3rd point of view to a script-like kind of thing? What I mean is:

Elena: Wait, I don't know how to use this thing! 

I'm not sure why it's like this but it's... weird. I would change this back to third point of view and try to avoid doing this since, I don't think you're trying to write a script. 

Also, when two or more people are talking, never put their lines in the same sentence. Example:

"What, where am I?" "This, is the Animus 2.1"

I'm assuming two different people, Elena and the Doctor, are talking here. So it should be:

"What, where am I?" 

"This is the Animus 2.1" (also, the comma after this shouldn't be there).

There are a few grammatical issues, example would be the commas and such, but the writing style could use a bit more polishing though I'm not going to assume English is your first language. As for the flow, I honestly have no idea what is going on half of the time.

Characterization:
I feel as if the characters are too scattered and really, no one knows who any of these people are. I feel like the story needs more K-pop idols in the mix since that's mainly what people are here for. Yeah, I like that there is diversity in this but at the same time, I really don't know what's happening with these people. I can't even pronounce half of their names correctly. I don't really feel like Krystal is a part of this despite her being tagged as a character because really, she's not a character; she's like an OC that claimed her face for the fanfic role.

Personal Enjoyment:
This really wasn't a story for me, it's kind of scattered and the script-like parts throw me off. I love video games, mainly WoW, but I know nothing about this one and I'm just purely confused reading this. Maybe if I had more of an understanding about the game but there is a bit of issues with grammar (punctuation, adding on the letter S to things that don't need it, etc) but again, you might not be a native English speaker so grammar isn't something I'd focus on for the review.

It's just a bit scattered and the character's names are almost hard for me to keep reading because I don't know how to pronounce them and I'd hate to pronounce them wrong. I don't know. As I said, it does't really seem like a fanfic that would be on this website since it's not really... Asian besides Krystal and the actor. I feel like if anything, the story should be focused on the idol of the story which is supposed to be Krystal but it doesn't.