Little Uzumaki is a fanfic by Lucillia. It is a AU set after the Wave Arc where Kakashi takes Team 7 to a rest stop after running out of water through a shortcut, realizing too late it was the spring he was told to never go to. It's Konoha's infamous Fountainof Youth, which turns Team 7 into two year olds. Team 7 are now toddlers and have to grow up all over again! Hilarity Ensues as Team 7 has to be taken in by their respective guardians and still have to take the Chunin Exam.
Abhorrent Admirer: While not ugly, Kushina was a very aggressive one to Orochimaru. He still has nightmares and tries to repress all his memories of her.
Blessed with Suck: The Fountain of Youth will make you young, but it will also regress you mentally to that very age. While all your memories and progress before that age disappears and kills you in a sense. Noted by foreign nin why Konoha doesn't bother to keep it a secret.
The Sharingan allows the Uchiha to keep their memories and personality, and are able to preform jutsu but they're physically children.
Break the Haughty: Danzo - after giving Naruto to Kisame, Godaime Iruka beats him up and arrests him, uncovering and disbanding ROOT in the process.
Children Are Innocent: Sakura and Naruto are this. Sasuke is not. Neither is Itachi, but he pretends to be innocent unlike his brother.
Cool Clear Water: Subverted as the water from the Fountain of Youth is cool, clear and drinkable, but cursed and bad to drink for obvious reasons
Cosmic Plaything: Given Sakura's been deaged four times already (consistently ignoring the sign that says to not drink from the Fountain of Youth), Danzo has begun to seriously wonder whether she's under some kind of curse.
Creepy Child: Invoked by Sasuke to the Hyuuga Clan to leave him alone with Hinata. Also Invoked by Team 10 - they use Naruto to have other teams give up their scrolls to get away from him.
Then Sasuke turns it Up to Eleven after Neji beats up Hinata, to the point that the other Hyuuga thinks he's demonically possessed.
Cruel to Be Kind: Downplayed, as Ino had to flick Sakura on the head until she cried and said she quit.
Cuteness Proximity: Naruto is adorable as a toddler. Women at the market surrounded him and Iruka, cooing how cute he was until they found out he's Naruto. Kunoichi at the Chunin Exam swarm him, cooing about how cute he is.
Exact Words: Team 7 passed the First Exam because they followed the rules: they weren't caught cheating because they can't read or write, and they didn't quit because they didn't know what was going on.
Explain Explain Oh Crap: Kakashi tells Gai and Asuma that Team 7 is participating in the Chunin Exams, despite being toddlers since they probably wouldn't get far. Gai points out they could pass anyway because Team 7 still technically followed the rules.
Fearless Toddler: Naruto hasn't aware or scared when he was in the Forest of Death or kidnapped by Kisame and Itachi. The latter is justified by them treating Naruto really well and Naruto only becomes upset when he's away from Iruka too long.
For Want of a Nail: Surprisingly enough, yes. The variables being that Sakura was actually a contemporary of the Sannin, and that the Fountain of Youth exists. Oh, and Obito isn't evil.
Four is Death: It's mentioned that one Hidden Village always has rotten luck with Team 4.
Fridge Horror: Invoked when Godaime Iruka met the ROOT after disposing of Danzo. He realized that several had been his classmates or students and that if he didn't bring so much attention to himself, he might have also been abducted into ROOT.
Irony: After they're de-aged, Sakura hates Sasuke because he's mean to her (not that he cares). Meanwhile, she adores Naruto because he's a sweetheart towards her.
I Want Grandkids: Sort of. Sakura's father is starting to despair of EVER seeing grandchildren after the fourth time she gets de-aged. After the third time he told her then-boyfriend Hyuuga Akira that he should have told him to knock Sakura up rather than warning him away.
Innocent Inaccurate: Sakura and Naruto mistaken the First Phase of the Chunin Exam for being "Quiet Drawing Time."
Keep Away: Jiraiya recalls Sakura and Tsunade playing this game with him as the ball with Orochimaru when she was her original age
Kicked Upstairs: Hiruzen tries to give the position to the revived Hokages, but they all refused. Iruka get promoted to Hokage because no else wanted it, he is feared by every one, he can tolerate paperwork... and he was nearby.
Most Writers Are Adults: With the exception of Sasuke, when the narrative switches to Naruto or Sakura, they have a two-year old perspective.
Mundane Luxury: Konoha as a whole to Gaara, flowers to Temari, tomatoes to Sasuke.
My Biological Clock Is Ticking: Gai is thinking of saying yes to a woman who asked him to sire her children. Neji is horrified that someone wants him to reproduce.
Oh Crap: Madara, when he's de-aged to a seven-year-old by the Fountain.
Kakashi, Ibiki and Anko when they invoke Iruka's wrath... scratch that, everyone who knows Iruka's reputation knows that when he's pissed, the best thing to do is to bury your head in the sand and hope he doesn't notice you or think you hurt/upset Naruto.
Older Than They Look: Sakura is technically 50 years old, but keeps deaging due to having four accidents with the Fountain of Youth
Overprotective Dad: Iruka is infamous for it that people run for the hills when Iruka starts searching for the ones who endangered Naruto.
Papa Wolf: Iruka to Naruto. Although it's Played for Laughs, to the point that people run in terror avoid Iruka's wrath for putting Naruto in danger.
Inverted with Sasuke, as Hinata became his mother figure. So when Neji maimed her, Sasuke humiliates him to defend her honor.