Prologue
"So, why does Lady Tsunade want to talk to me again?"
"Wait and see."
"Kakashi, this weird guessing game is really getting on my nerves."Sasuke Uchiha said as he shot an irritated and curious look at his father.
The silver-haired jonin smiled at his son in an evasive manner. Soon they reached the door to the Hokage's office and Kakashi knocked.
"Enter!"
Sasuke did as she commanded.
And his heart stopped.
In front of the Lady Tsunade's desk stood an old man with tan skin, black eyes and long white hair. And besides this man, dressed in an orange and black tracksuit was a boy with brilliant blue eyes and blonde hair that spiked in every direction imaginable . . . could it be . . . ?
"SASUKE!!"
Leap. Slam. Crash. Yeah, it was.
When they finally got Naruto off of Sasuke, the Fifth Hokage smirked and said, "Your arrival couldn't have been timed better, Kakashi and Sasuke. Naruto, do you remember what I said about how you would need to train quickly to get up the ranks, as you're still a genin?"
Naruto puffed out his cheeks and scowled in annoyance. Sasuke squeezed his hand.
Tsunade took that as a yes. "Well, Sasuke here is the perfect example of why."
Said boy raised his eyebrow as Tsunade turned to him. "Congratulations, Sasuke. You've just been promoted to Jonin."
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"You don't have to pretend."
The blonde looked up at the newly appointed jonin. "What are you talking about?"
Sasuke sat down on the red bedspread beside the genin. "You're angry at me for making jonin before you did. I know that. You don't have to pretend to be happy. I can see right through you."
Naruto was silent for a moment before he sighed and turned to face the raven haired boy. "Listen, Sasuke, you're right. I am mad that you got there before me. But I'm happy for you as well, you deserve this. It's the same with Gaara. I'm frustrated that he's Kazekage, but he's my friend and I'm genuinely pleased for him."
He flashed his trademark grin at Sasuke before blushing and looking down at the piece of bedspread visible between his crossed legs.
"What's wrong?"
"Um . . . well, I-I was wondering . . . you know how before I left, we k-kind of . . . you know . . . kissed and everything?"
Sasuke nodded as he frowned, not sure where this was going.
"Well . . . it's been so long since then . . . and I was wondering . . . I know that I still want you, but . . . d-do you . . . still want to be . . . my boyfriend? Cause-cause it's alright if you don't, I'd completely understand-"
Sasuke shut up his rambling and his doubts by slamming their lips together.
____
"The time has come, Kakashi." Lady Tsunade said in a serious voice as she stared across her desk at him.
"What do you mean?"
"You know what I mean. There's a reason why you didn't want Sasuke as your son. It's time you told him the true reason, the power that flows in his veins."
Kakashi stared at his clenched hands, unable to look the Hokage in the eyes. "I . . . I can't. It's better if he doesn't know, as long as he's in the dark about it, he's safe."
"Kakashi," Lady Tsunade said, staring at him until he looked her in the eyes to continue. "You have to tell him. It's his right to know the truth. And it's not just that; Akatsuki is on the move. It'll be in his best interests to be prepared; it's not just Naruto's power they'll be interested in."
Before he could protest, she added, "And you shouldn't worry so much about his safety, he doesn't need your protection. I should've promoted him to jonin a while ago, but it just kept slipping my mind. He's one of the best, Kakashi."
Kakashi gave her a sad smile. "I can't help it. He's my little boy. Just not so little anymore."
Tsunade smiled back. "I understand. But really, it's time he learnt the true secrets of both of sides of his family."
Kakashi looked back at his hands as they clenched at the fabric of his trousers. " . . . Yes, I know."
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A/N: If you can't figure it out, the 'true secrets' she's talking about is the legacy mentioned in the title. I'm saving that line for a later chapter.