Reunited

Hagoromo seen many things, with help of his brother he sealed kaguya - his mother in moon, but sometimes when we seek peace, darkness also follows like a shadow along with it. And that was kaguya's will. Kaguya let her will escape, right before she was getting sealed.

This will is know as black zetsu. He waited or hagoromo's children to be born. Well he created them by dividing his chakra in to two, [ this is a fanfic soo...], both were yin and yang version of his power, both are equally powerful. Only thing diffrent was. Indra was early boomer in-compared to asura.

Asura always looked up to his older brother, even though he didnt have du jutsu like his brother, he had enormous chakra, that did insecure indra.

When people gave attention to asura, indra felt as if he wasnt getting any. He achieved many things, like activated his sharingan and also susanoo. For hagoromo his both sons were equal in his eyes. He knew both were prodigies. But indra was born with talent were as asura had to manifest an improv it to achieve it.

Hagoromo thought it would be best if he made asura the clan leader, due to he impressed everyone, and he is more interactive than indra. He wanted indra to support and show asura by being his advisor. He thought if his decision was right.

Sometimes jealousy can destroy relationships, it can be between any one, let it be lover, friends, parents anyone.

Zetsu thought of taking advantage of this situation and manipulated indra into king him. Well he did succeed at that in every way possible.

Both brothers fought, in the end asura won the fight. Zetsu feeling defeated he flees from them, waiting for good opportunity to seek revenge on both the brothers.

Even after war, asura and Indra's relationship didnt change but rather, it got distant, both married and had kids. These kids later on lead clans know as uzumaki, senju and uchiha along with other clans to.