If I wasn't already okay with the pairing featured in this fic because of a friend, after reading this would've gotten me into the pairing.
Series: Final Fantasy 7
Title: Too Good To Be True
Author: Miko No Da
Warnings: Spoilers for the entire game and Advent Children. NOT canon to Crisis Core, lemon
Couple (if applicable): Zack/Cloud, one sided Cloud/Tifa, past mentions of Zack/Aerith, hinted Sephiroth/Cloud and Sephiroth/Zack
Plot: 8/10 - Okay, so the plot isn't really original. Basically, Cloud comes upon a lab run by Hojo and lo and behold, finds Zack inside of the mako testing tubes. So friendship is rekindled, unresolved feelings come back, with some drama in between and all that, but sadly, Sephiroth is trying to muddle in affairs again.
It's a simple plot with a twist here and there, but it's not bad and it suits the story well enough. Though I find it funny that the game and the movie canon is followed to some degree while Crisis Core isn't. I personally don't have a problem with that, and Zack is pretty much in character regardless.
The only thing this story lacks is an epilogue. Most of the main plot is resolved near the end, but there are a few lose strings. There's no resolution about the files that Cloud found, even if it was nothing, it would've been nice to see this. There's no real resolution to the Tifa thing either, though you can kinda guess that a resolution between Cloud and Tifa is peaceful since it's strongly hinted on near the end.
Writing: 9/10 - Just enough descriptions and enough dialogue to keep a person happy. The only problem I have is the characters using the summons' names as cursing. It's just odd and I don't know if it's a fandom thing or maybe a prequel/sequel came along and started using them and it became some sort of trend in fandom. It doesn't distract from the main story though, and the flow of the writing is near perfect. Though I will admit to laughing out loud when Zack said, 'Ifrit's Balls!' >.>
Characterization: 10/10 - There is one thing I must give this author compared to any other authors out there. The author managed to write a Yaoi pairing and still being respectful to canon, aka, Cloud/Tifa and Zack/Aerith. SO many fanfics when it comes to yaoi pairings will resort to bashing of the females, but not in this story. This story, Tifa is as strong as she always is, and stepping aside to make the person she loves happy. Kudos to the author on this.
Even though this doesn't follow Crisis Core canon, Zack is perfectly in character from how I remember him in CC. A very cheerful guy who can be serious at times and cares deeply for the people he's close to, in this case, Cloud. Cloud's character is actually done fairly well too, and the relationship between Zack and Cloud is more on equal terms rather than your typical Seme/Uke pairing. Which I adore. I also love the banter between the two, it flows very naturally. The way they both interact with each other and the way Zack notices little things that Tifa didn't or even misunderstood shows how deep a friendship they had.
In fact, I think every character that's in this story is true to their characters from the original game. I mean, to be honest, I'm shocked at how the author pulled off the characters so well.
Negativities: Unless you're a canon whore to Crisis Core...
Summary: When Zack comes back into Cloud's life, things couldn't be better. Too bad that's not how life works sometimes, especially when it involves Sephiroth....
Overall: 9/10 - If you're not a Zack/Cloud shipper, this story could very well convert you to be. If you're on the fence about this pairing like I was, this story will get you over that fence. In fact, I would just recommend this fic on the basis on this is how you write a slash pairing for a fandom that has canon hintings of hetero pairings. Very well done.