Tenseigan and Mugen Tsukuyomi

Hajime Pov:

Hajime was watching all this drama going on, there were a few moments that he felt like stepping into the middle of this fight and ending it somehow. But he can't, because his mother is on a path of madness, so she can't see past that, his brothers are seeking power to fight against their mother's madness, but still not trying to understand why she acts like that.

He has never shown much feeling for this family, but even he feels they are special, but still fate must take its course. His presence in the shinobi world is already changing him, it doesn't look like much, even more so now, but as the clans begin to emerge, the butterfly effect will begin devastatingly. That's not bad, as he won't be in this world for long, but he will still have to adapt to whatever comes his way.

"Hagoromo after his Rinnegan awakening got stronger, using unconsciously his emotions and thus awakening his power. But this comes with a big setback, he doesn't know it yet, but his descendants especially those who inherit his eye abilities will have to use emotions as a means of power increase. A way without a doubt without logic". Speaking to himself and analyzing the possible future of his brother's descendants.

And so he thought of the Uchiha, those with the Sharingan, where they will have the famous curse of hatred, all of which comes with Hagoromo's principle. He doesn't know it, but he's indirectly leading his descendants into a never-ending struggle for their emotions.

Hagoromo Pov:

With these eyes I feel invincible, they have granted me so much power and abilities, I think I have finally surpassed my brother, and when I defeat our mother, I will undoubtedly be hailed as the one who has truly brought peace to the world.

In his thoughts, with many fades, Hagoromo helped his brother up, even though he was at his best, he still felt bewildered, for it is not every time you escape death and return.

"Brother I wonder if we shouldn't talk to our mother, even after everything I think we can work this out." Hamura of the Otsutsuki family on this planet was undoubtedly the kindest, and Hagoromo hearing this from his brother felt that he still didn't understand how things would go on. He must show his brother the reality, and so bring peace to the world.

"Look here Hamura, pay attention, you were being controlled by our mother, so we have to stop her, we have to do everything in our way to be able to stop her because she is paranoid and we will die this way!". He spoke in a commanding tone, signaling that there would be no more talk so that his brother could understand the situation at hand.

Hamura even though sad put a very firm resolution in his eyes, and for a split second they shone in a sky blue, that was the resolution of a gentleman.

And so ending their dialogues, they were about to fight, Kaguya who was watching everything even with her emotions suppressed still had a desire to just defeat her children, and show them the truth, she won't fight with him with all her strength, because even she can't control it, and if she does so she might end up destroying this world and also destroying her children.

On the horizon, the sun was setting, and thus signaling the beginning of a battle that will last a long time.

...

Kaguya began to float, and her splendor was being shown, signaling why people called her a goddess, her Rinnesharingan was at that moment in its splendor, thus making the ground shake, the world was shaking, they were feeling a power never seen before.

As he raised his hands, the divine tree on a hill not far from that place began to wither it was withering away. And so a heartbeat was heard, almost like a drum ready for war, and it was loud, almost a rumble, showing the power of a primitive creature.

Hagoromo and Hamura at this moment we're seeing their mother's power for the first time. And that was amazing, even though they were training to perfect themselves, they understood that around her they were very small, almost like ants.

"Brother we have to go with everything, we can't hold anything back right now!". Said Hagoromo, in his voice can be felt a bit of fear, being the first time in his life that he felt something like that.

"I understand brother." Answered Hamura, after all this was a dead end, he could only take the consequences of taking responsibility, so he will stop his mother at all costs.

And his resolution was answered, the senjustu in his body was absorbed by his eyes, which shone with great clarity, thus giving birth to another Eye Skill, the Tenseigan, only those with the incredibly pure bloodline can achieve this power. And Hamura being a son of Kaguya no doubt has access to this lineage and thus awakening the Eyes of Reincarnation.

Hagoromo who was beside him felt a massive increase in his brother's Chakra, and when he looked and saw that his eyes were a sky blue and seemed to have a golden flower, very beautiful and even more so combined with the white hair and his gentle appearance.

"Brother your eyes will change, and you are as strong as I am." Said Hagoromo with a certain envy, for he thought that he had thus surpassed all his brothers, and now his younger brother had a power equivalent to him.

"Brother with the determination to put an end to all this, I was graced with the Tenseigan, with it I can for our mother and so who knows we can be a family again." In the end, he said with a bit of melancholy, for he knows he would have no way to reach that solution.

Amidst their changes they saw an amazing thing, the ancient divine tree that was drying up was now rising and taking the form of a beast they had never seen before.

Kaguya looking into the eyes of her two sons, and seeing the power contained, knew she would have to be a little more serious, so she did, and raising her arms she says "Mugen Tsukuyomi". In her mind, no one needs to know how she deals with her children.