Avatar:The Tale of Two Otsutukis

Everyone knows the story of Indra Otsutsuki and Ashura Otsutsuki...and ofcourse the story of the nine tailed beasts... everyone in the Shinobi world that is.

However, what nobody else knew was that Hagoromo Otsutsuki had two more children...with different women, but, their purpose didn't lie in the Shinobi world, their purpose was to bring the power of Ninshu into the Bending world and make it better...rather than the Shinobi world which became warfilled due to Ashura and Indra's unexpected hatred towards eachother.

Hagoromo felt as though he had failed the Shinobi world when his first two sons had began to fight...so as a means to redeem himself he tasked his two younger children...Geleel Otsutsuki, 15, and Karina Otsutsuki, 16, with the purpose of one day going to the Bending world and helping the dormant Avatar to save the world and bring Ninshu to the world.

Geleel Otsutsuki...Karina Otsutsuki...a brother and a sister who had been training for their purpose since they could formulate words.

Their father, Hagoromo Otsutsuki, never explained their purpose fully...atleast not immediately, but they knew all the training they were doing was for a reason.

They were only half siblings...seeing as Hagoromo had them both with two different women, but their relationship was as strong as any siblinghood.

Emphasis on WAS as strong though...you see, throughout their young lives, Karina and Geleel had too started to brew a rivalry similar to the one Indra and Ashura had developed...but Hagoromo had hoped it wouldn't burst into the eternal flame of hatred that his other children had burned up in.