Right before I start this I just want you to know I do not own Naruto and I'm just writing this for fun.
Shisui 16 years old
Itachi 15 years old
After Shisui and Itachi met each. One year after the third great ninja war. Shisui and Itachi had an almost brotherly bond, Shisui wanted Itachi to think of him as his older brother, while Itachi is the younger brother. the younger. They would meet each other everyday to train together. After they figured out about the coup, they had to save hidden leaf and all of the uchiha! Shisui told itachi he would meet in in 3 hours on the rooftops of the tallest building. He had some work to do with Hiruzen Sarutobi. I don't know if shisui can teleport or if he's super fast. Shisui teleported away to Hokage mansion! Shisui ran right in and asked the security where Lord third was. After getting an answer shisui ran up the stairs until he saw Hiruzen the Mayor and Danzo all together. He told them about his plan to use his mangekyou sharingan to find out who the members of the coup where. Even though Sarutobi was reluctant he decided to let Shisui do his plan but told him the great punishment that could happen. Shisui thanked him and teleported away straight to Itachi. Itachi said sorry but I have my little brother here to. He was so determined to help defeat the coup, that i just had to. Shisui sighed but then grinned and said ok let's do this. With Itachi on his left and sasuke on his right they all stood there for a second then they all jumped off the building. They all landed on the ground, but itachi had to catch Sasuke and they all ran! Sasuke lagging behind by a long shot. Cmon we're gonna be late. While i was with Lord third, he told me where the coup might be. So i will go ahead and you catch up as fast as possible. As shisui teleported right to the hills he saw a needle come at the corner of his eye and he jumped up just in time and landed on the side of the tree putting chakra in his feet. Then he grabbed a kunai and blocked a bunch of needles before jumping right back down. Then five anbu came out. They ordered him to stand down or he dies. Shisui denied and said I would rather die than give up as he jumped right at the anbu. One yelled wind style: great breakthrough as a heavy wind swept at shisui. Then when he got his balance back he yelled Uchiha style:hale dance As he shot the fire crescents out of his sword. Killing two of them. He thought in his mind, Two down three more to go. As he yelled Fire style:running fire As he ran in a circle around another two killing them. One more to go shisui thought. As shisui slashed with his sword chopping his mask off revealing Danzo. Then he backed up he knew he couldn't beat Danzo. Then a hand grabbed danzo's shoulder and threw him at a tree going right through it. Shisui opened his eyes to see his best friend itachi. Shisui asked where is Sasuke. Itachi replied with he won't be here for a while because he's not as fast as us. Danzo got right back up and wiped the dust right off his shoulder. Then charged full speed at Itachi head first. Danzo hit Itacho right at the stomach sending him flying yards away until Shisui caught him mid air. When they landed Shisui asked if Itachi was okay. He replied with a simple nod. Shisui told itachi to rest and said he will take danzo. Shisui came running. Turning on his sharingan punched Danzo then teleported behind him and did a spin kick. While he was 1 foot above Shisui did a front flip and did a kick sending him right to the ground. Shisui yelled Itachi support. Then out of no where Itachi jumped in front of shisui and yelled Fire style: Dragon flame jutsu. Right at danzo stunning him for a second.
Then danzo said guess I underestimated you both. Shisui I know you have a mangekyou sharingan but what will the use be if your dead? Then danzo teleported right in front of Shisui then punched him in the gut then jumped up grabbing his face then smashing him right into the ground. Then used Wind style: wind dragon jutsu. Smashing Shisui almost killing him. Witnessing thst entire scene Itachi thought he was dead. Tears streaming down his eyes. He said angrily, you… YOU! YOU KILLED HIM! As he activated his sharingan he started gathering his fist and in his mind he said Sasuke, Shisui, Dad, Mom i will win this battle for all of you as he activated his sharingan, It started changing shape, until it became a mangekyou. As he was covered in an orange aura. Then an orange skeleton appeared engulfing Itachi. Then he grinned i have this new power why don't i try some Yasaka beads As he threw them they exploded engulfing danzo. Danzo said I might not be strong enough now but i will be back and much stronger. As he through a smoke bomb and when the smoke cleared he was gone. Itachi went right to shisui and checked for a heart beat. Then he felt a faint heartbeat. He sighed and put shisui right over his soldier and he left the place. Then Sasuke finally arrived and yelled im here for the battle! even though no one was here. Then he whined were ie everyone I just arrived!
Everyone hoped you liked the first chapter I felt like Shisui wasn't getting a lot of stories so this is about him and Itachi. Please review and if you don't like it you don't need to read it