Before we get started, there are some things I want to clarify! So please make sure to read this in order to avoid any confusion.
First of all, the title:
"Drowning" refers to the way Shisui died. He committed suicide, yes, but in the form of a sacrifice so that Itachi can awaken the Mangekyo Sharingan and massacre the clan with it. Let's face it, a regular Sharingan just simply won't suffice against the whole Uchiha Police Force. It's also to make sure Danzo can't get his hand on the other half his Mangekyo (he can't attack Itachi once he leaves the village).
"Sea/Wave" refers to the "sui" in Shisui's name, which means water. So, a wave of water.
"Red" refers to 3 things directly. Kurama's red color and chakra. Uzumaki's infamous red hair. And the color of all the Sharingan and its different forms (minus the Rinnegan). Plain, simple, and to the point. I might reference or hint at some other red things throughout the progression of the story. So watch out.
"Leaves" obviously refers to Konoha, but in this story, it especially signifies Hashirama's (Senju's) and Madara's (Uchiha's) dream for peace (indefinite future together). Put together, the title sounds pretty ominous. And I promise you this: it is definitely on purpose.
The second meaning behind the title comes from one of the Nine-Tailed Fox's legends from Chinese/Vietnamese and Japanese folklore. Japanese part is pretty obvious if you payed attention to canon so I'm going to cut to the chase and explain the other two parts. In Vietnamese mythology, the man that founded the Vietnamese people (IDK if this refers to a clan, or just the civilization as a whole) battled against a nine-tailed fox which resulted in the formation of the West Lake in Hanoi. In myths, it was originally called the "Sea of the Fox's Body" as it is believed that the fox's spirit drowned in it. See where I am coming from?
In Korean legend, though, the Kyuubi no Kitsune is more popularly known as "The Celestial Fox" as it is believed to be closely tied to heaven. An obvious reference to the pure Yang chakra sealed inside Naruto. The fox's personality itself, on the contrary, is said to be vicious: horribly killing someone and eating them in order to take their form. Which basically represents the prejudice against all Bijuu and their respective Jinchuuriki.
Now here's what this story will encompass (for now):
Shisui x fem!Naruto - You really wouldn't be here if you hated the pairing. Summary says it all.
Time-travel - All the way to the Warring Clans Era! Har har har har hardy har har.
Itachi never destroyed Shisui's remaining eye (the one that was entrusted to him). Instead, it was gifted to Naruto after said genius and proud mass murderer was released from Edo Tensei/Kabuto's control. Shisui's Sharingan still can be used as a regular Sharingan (similar to Kakashi and Danzo).
Sword of Totsuka, just like the sword of Kusanagi, has two versions in this story. The two Kusanagi belonged to Orochimaru and Sasuke respectively (canon info). So it's only right if there is a balanced number of Totsuka out there too. (You can look up the history of the 2 swords if you want 'cause I'm not going to bother explaining this.) The original is, as in canon, Itachi's. The other one is in..wait for it!...Shisui's hands! *clap clap clap* Or, at least, it will be eventually.
Ages at the time of Konoha's creation (will make more sense later on):
Naruto - 17
Shisui - 21
Hashirama - 27
Madara - 27
Tobirama - 25
Izuna - 24
Izuna died at 24. That much is cannon. So I'm basing the others' ages off of that (and a few mental calculations). I know that there was time in between Konoha being built and Izuna's death, but that time itself is uncertain. And guess what? Not relevant due to the few (for the sake of the plot) changes in my story!
My guess is that Hashirama was 14 when he first met Madara by the river. And as such Madara was also 14, Tobirama was 11, and Izuna was 10. See, this is the problem with Naruto. Kishimoto never gives us all the proper information relevant for the story. I'm pretty sure he's thought some of it out, but he's never given them to us.
OCs won't be added unless absolutely necessary. But I won't be pairing up cannon characters with OCs. Sorry, I have a strong dislike for that. (Because hate can sometimes secretly mean love.)
Anything else important will be added as the story goes on. I have a general idea of where I want to take this, but it doesn't change the fact that I'm writing this as I go.
Akai Konoha no Nami ni Oboreru
First Abscission - Shisui is a Creepy Fanboy™.
Uchiha Shisui was at a loss. He didn't know why. Or how, for that matter. But he was screwed.
It wasn't everyday that you're assigned a mission to put an end to the stupidity of your suicidal clan. And it definitely wasn't everyday that your Hokage's old teammate decided that he wanted your clan's kekkei genkai so that he can not display his pretty eye collection to the whole entire world. (And yours just so happened to be the most essential one needed to complete said pretty collection.)
That's okay, though. The great Shunshin-sama can deal with that. But waking up from the infamous endless sleep only to find out that you're Uchiha Madara's newborn baby cousin was a completely different matter. Something he doesn't remember signing up for.
At first, he suspected that Itachi might have decided it was funny to drug that last dango he offered him. (After all, since when did Uchiha Itachi share his dango?) There was no way this was reality, he had told himself. Or the afterlife, for that matter. But all of his suspicions were proven to be incorrect as the warmth of the people around him remained as genuine as he remembered it. It was simply impossible for one to fool the genjutsu specialist's sixth sense.
He bobbled his head to the side as he heard his supposedly new mother coo at him. And then, his eyes widened. It couldn't be, could it?
In front of him was his infamous great-grandfather that people always had the tendencies to compare him with.
Holy shit!
The. Uchiha. Kagami. That's it. Shisui wasn't going to complain anymore. After all, when was the last time someone got to travel through time only to end up in the timeline of his second-most respected hero? (Only losing to the beloved Minato-sama. But he can fanboy about him later.)
"Kagami, come greet your new baby brother!" his mother told him excitedly, gesturing her hand towards the 3 year old.
Or have him as your new older brother?
Oh. My. God. Oh My God! Shisui would have screamed right then and there if he could. He stared at Kagami as the boy stretched his chubby hands to take the baby in his arms. Shisui gave him the look of a predator and he could swear he saw Kagami flinch before placing him in his lap, tiny arms wrapped around his even tinier body.
What an honor! Shisui squealed in his mind, the only thing in his way from turning into a total fangirl being his inability to converse with the beautiful, majestic man -err boy- in front of him.
Kagami gave him a weird look, as if he did something odd. And then Shisui noticed the unnecessarily huge amount of drool dripping down from the corner of his mouth-
Shisui sweatdropped. Oops. He couldn't have his new older brother scared of him just yet. That would have to wait until after he finished succeeding in his very awesome first ever prank on his newly acquired target.
"I don't think you have anything to worry about, okaa-san. I think he'll make a great shinobi," Kagami assured his mother as she stared at her newborn's odd behavior. Call it a mother's instinct, but ever since she'd taken little Shisui in her arms, she'd had a feeling that things in the Uchiha Clan will never be the same again.
(Or the rest of the shinobi world for that matter.)
"Oh yeah? Well, it's good that his big brother believes in him so much," the woman smiled teasingly at her oldest child. "But what makes you so sure?"
Kagami took one look at his baby brother before fearfully stating, "for starters, he already has the Uchiha™ smirk down."
( Next Abscission - Kagami wants a Refund. )
So I have this headcanon that Shisui is the most non-Uchiha Uchiha after Obito. Thus, this monstrsity was born. It's mostly humor, but it'll have its serious moments too, eventually...and when they come, they'll hit pretty hard. Trust me.