(This is my first Naruto fic, but I have been a fan for many years)

Naruto, Sasuke, and Sakura both had looks of shock on their faces. Sasuke had the biggest look of shock on his face.

"That's impossible. No one can do that." Usuigi stared at him real serious.

"Yes it can. But it is a power that only can be used in my blood. Therefore, your bloodstream must have some of MY blood in it. But first a demonstration. Sasuke, activate your Sharingan." Sasuke obeyed and activated it. Everyone sees Usuigi close his eyes. Suddenly, his eyes glow with blue chakra. Usuigi opens his eyes and everyone sees a black covering go over Usuigi's eyes. Sasuke immediately feels a change. He can't focus on Usuigi's chakra. Worst of all, he can't follow Usuigi's movements. Sasuke suddenly feels a punch collide into his face. Sasuke collides with the ground. He tries once more but he can't see Usuigi's movements.

"Sasuke, activate the Mangekyo."

"What do you mean, I don't have that power."

"Yes you do. You had it since the night your clan was destroyed. You just haven't realized it." Sakura intervened.

"But one can only achieve the Mangekyo through the act of killing your best friend."

"Not true. There are two ways to activate the Mangekyo. One is through the murder of your best friend. The other is through the emotion of revenge. When your parents were killed by Itachi, the thirst for revenge was so powerful that it activated the Mangekyo. However, when the Mangekyo is activated this way, it will require a type of invisible seal to be used. You must learn to activate it at will. I can help you with that." Suddenly Usuigi forms seals at supersonic speeds. He holds out his hand and they all see glowing chakra on his thumb and index finger on his left hand. "Keep your eyes open no matter what. Alright?" Sasuke nods. Usuigi's left hand proceeds to Sasuke's face while the other hand holds his eyelids open. The fingers with the chakra on them touch Sasuke's bare eyes. Sasuke gets a searing sensation in his eyes but his eyelids won't close because of Usuigi. Suddenly, the pain is gone and Sasuke feels something start to surge through his body. Power. Usuigi smiles.

"Try it out." Sasuke suddenly realizes he can use the Mangekyo. He activates it and uses it on Usuigi. He finds that he controls Usuigi's fate in that dimension. He releases Usuigi.

"Now Sasuke, you must train VERY hard to learn how to use the Mangekyo correctly and efficiently. It will take much hard work. Also the only thing that can fully defend one from a Mangekyo is another Mangekyo. That should protect you from Itachi. Now, you two." Naruto looked on eagerly. Usuigi hands them a kunai. "Cut a deep wound from here to here." He motions to their wrist to halfway up their forearm. Naruto quickly does so, but Sakura takes some convincing and eventually does it. Usuigi does the same. He squeezes a good amount of blood out of his wound and drops it into Naruto and Sakura's wounds. He quickly forms seals and waits. After about a minute, Usuigi rams his finger into Naruto's wound. The finger goes all the way to the bone. Usuigi screams out,

"KAI (release)" suddenly Naruto's entire body feels like it's burning from the inside out. Usuigi pulls out his finger, but Naruto's body still burns. He does the same to Sakura.

"Now, Sasuke. What do you see with your Sharingan." Sasuke noticed a hell of a lot happening in their bodies. The chakra was changing. Very slightly, but changing none the less. "You two aren't gonna feel good for the next 24 hours as your bodies adjust to this new power, but trust me, you'll thank me in the end." Both Naruto and Sakura felt something aside from the pain. They felt a strange feeling in their eyes. It was too early to fully understand what Usuigi did to them. Usuigi had Naruto and Sakura sent home. However, he asked Sasuke to stay. "I need to talk to you, alone."

"What is it?"

"I have one final thing to give you. If Itachi does draw you into the Mangekyo's Genjutsu, you can use this seal to get out. But it will only work once." Usuigi begins to form signs at a very fast pace and slams his palm to Sasuke's chest. Inscriptions form all over Sasuke's chest. "If he gets you in the Genjutsu, release this seal and you will be released. Remember it will only work once."

"Thank you sir." Usuigi let out a snicker.

"Don't die Sasuke." Suddenly Usuigi dissolves away like black sand.

(Please review)