My Naruto AU Headcanons:Itachi Uchiha
Itachi was trained by Minato and learnt Flying Thunder God jutsu from him. Itachi also figured out how to add Fire Style to Rasengan,and taught Minato how to add his chakra transformation to it,which was Lightning Style.
Minato is the only one throughout history to teach FTG to two of his successors:Genma Shiranui and Itachi Uchiha.
Kushina spent quite lots of time with Itachi after Obito's death. She is one of main reasons Itachi is not just so great at casting sealing jutsus but legendary Talk-no-Jutsu as well.
This skills were useful against Mangetsu and Mei,as he slowly guided them to light. They went from rivals to enemies to comrades and to friends.
Minato died with his head resting on lap of 5 years old Itachi,poking on the uchiha prodigy's forehead in his last moments.
Itachi's best friend and soulmate is Mangetsu(INFJ),who is complete opposite of Suigetsu(ESTP). They are so intimate it's unreal for most people.
Mangetsu is a very affectionate person who likes to depend on Itachi,often hugs him and lightens his mood. The irony of this is that Mangetsu wanted to kill Itachi so bad for 4 years. INTJ X INFJ=Golden Pair
Sometimes,Tsume teased Itachi,asking him to go on a date with Hana. Hana scolded her mother once she told Itachi "Afraid us half-canine anomalies would taint your noble uchiha blood?" Which earned her a shocked expression on Itachi's face,who just said "What?"
Ayame liked to cook for Itachi and waited for him whenever he came back from a mission. Itachi believes Ayame to be one of the best chefs in the village. He encouraged Ayame, who genuinely thought Itachi's good enough to match her.
Itachi mentored Yugao for two weeks after Shisui's death. By the end of the training session,She had mastered 4 different kenjutsu styles and significantly enhanced her physical prowess. Danzo originally wasn't gonna let Itachi do it,but Itachi said he'll make sure konoha will have one of the absolute best swordsmen ever. He succeeded.
Out of all Akatsuki members,Itachi enjoyed Konan's company the most. Konan would visit him once in a while,and prevents the illness from paralyzing him. She kept it a secret. She was like an elder sister to him.
Deidara's death hit Itachi hard. While the former had beef with the later,They mutually respected each other and got to hang out a few times. Deidara sensed Itachi's sadness and could empathize with him. Deidara missed Kurotsuchi badly. Itachi never slept ever since Mangetsu died under full moon. Deidara occassionaly lied beside him,staring at the moon and stars.
