Chapter 28: ATLA Fanfic Idea
MC is reincarnated to the Avatar: The Last Airbender World with a Chakra System.
This System helps him utilize on how to use chakra, first it will help him with a chakra control like walking on water, after completing that he will go learning some hand seals to create a basic to advanced elemental jutsu, and as he masters them completely he will be allowed to combine those elements to create a elemental bloodline.
(Elemental Bloodline Example)
And lastly after completing and mastering all elemental jutsu he will be able to pick only one of the three strongest dojutsu. The Rinnegan, Sharingan, and Byakugan each one MC pick will give him a benefits.
The Rinnegan will give him the power of gravity to controll while also allowing him to take power from the spiritual world to use as substitute for the chakra allowing him to have a Sage Mode(like the Avatar State but with all that elemental bloodline to use with no limit)
The Sharingan can be evolved to Eternal Mangekyou Sharingan and will give him the power to conjure a True Susanoo while it also gives you the power to complete controll all animals(including the spirits if MC's will is stronger than them) just by looking at their eyes.
The Byakugan will let him see the everything with a certain radius where he can see their weak spot, it will also give him to fight with speed, agility, and accuracy where he can poke their pressure points and lastly he can sense what element they can bend and see their aura making him hard to be lied or tricked in to.
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The Chakra System will be limited to certain jutsus like the shadow/elemental clones, any type of illusions, teleportation jutsu's, and lastly forbidden Jutsu's.
The System doesn't have any store that can sell anything and only have a limited storage It will also not be a AI System and it will not give a quest or rewards its role in the story is a guide for the MC to use.
MC will not have any love interest in the story and MC will be born 20 years before Aang is awakened.
MC will fight the Fire Nation in the shadows while training in secret and will only show himself when the Avatar reveal his Return.
Weekly Power Status
-- Power
Ranking 
-- Power
stone