After ending his talks with Rudra, Itachi kept pondering his talks with Rudra, after knowing so many dark truths and stuff. He knew thinking about it alone would not help him. So he decided to run straight home to his dad and talk to him about this.
After all, he may be one of the strongest in the clan and the next clan head, but he was not clan head yet. So, he ran straight home and found his in-house courtyard meditating.
"Hey Otto-sama (Dad), we need to talk urgently. The whole clan's survival depends on this." Fukaku looked at his eldest son in astonishment. Ever since he was little, he has always been a sensible child, a bit too sensible. His heart ached for his eldest son who had to carry such heavy burdens as a kid. He knew a part of the responsibility lay with him.
If he had been a bit more decisive and had taken action and sided with either the clan or village, maybe his child would not have had to take on such a heavy burden. But he was reluctant to the little peace that is left in his life fade away.
He wanted to give at least one of his sons a stable environment. But he had a feeling, that it all was about to end soon. He did not know if it was for the better or worse but the curtain was falling of the chapter of Uchiha clan.
He got up from his seat, went inside the house and started preparing the tea while waiting for Itachi to calm himself down.
Itachi looked at his father who was ignoring him and started to feel anxious before calming down. He knew his father was a strict person who valued discipline over all else. He calmly went over to the Kotatsu table and sat down in front of his father who preparing tea and waiting for him to finish preparing the tea.
Fukaku smiled at his son who regained his composure and served himself and his son tea while asking, "First rule of being a ninja, always be calm Itachi. Now speak, what made you so anxious?"
Looking at his father in front of him, Itachi had a mischievous idea. He wanted to see his father lose composure. So he did what his dad asked him to do. He talked. The more Itachi talked, the more Fukaku started becoming restless. By the end of his talk and purposed plan, Itachi got to see a rare sight of Fukaku losing his shit and pacing all around the room muttering it's impossible, how does he know, what to do, etc.
'How is that for being calm you damned geezer.' Itachi thought while trying his hardest to not break into a smile while looking at his father.
After 10 to 15 minutes, Fukaku calmed down and sat in front of his son who was smiling at him. He glared at his son before opening his mouth, "How much do you believe him, this Rudra guy? Can he be trusted? How does he know so much?"
Itachi looked at his father in the eyes before opening his mouth, "I don't know. I met him yesterday. But something is different about him. He feels like he is not from....this world. It all seemed like a game to him. When I talked to him, I felt it."
"Felt what?" Itachi thought for a while at the question before replying seriously.
"He had this look in his eyes. It felt like he was not looking at us like how other humans look at each other, it is how we see pets or characters in a book. It was like looking at us from 3rd person point of view. When he talked about the Uchiha, Senju, and the Village, I saw it. The look in his eyes. It felt like this was all a game to him. Or a play maybe. and we all are actors in the play while he is in the audience. But one thing was for sure, he genuinely believed in everything he said and his kindness was real."
Hearing his son's analysis, Fukaku fell into thought. Either this man was so powerful that he looked at people as things or he was a pure psychotic nutcase and Fukaku tended to believe he was the latter. But all that mattered now was that the clock was ticking and he had to make the decision.
After making up his mind Fukaku looked at his son and said, "Today we will call up a clan meeting. As for you Itachi, come with me to meet our new allies. Hopefully, they will agree otherwise our plan cannot move forward."
Itachi looked at his father who made up his mind and braced himself for the change that was about to come.
--------------------------------
Meanwhile, Rudra walked into the legendary stand of the last living immortal on this planet, Teuchi from Ichiraku Ramen. (Kaguya is technically sealed in space on the moon)
This guy had survived the 2nd 3rd and 4th ninja wars and, the destruction of the village multiple times, and even when got sealed away in alternate dimension, he was still going strong. Rudra even suspected the guy's full name was Teuchi Ōtsutsuki which is why it was never revealed in the show.
"Hey, old man Teuchi!! How are you doing? Give me a miso ramen, I have been craving one all day long!" Rudra greeted him with a smile while looking at the guy working who was busy making ramen.
"For the last time, I am only in my 20s!! Stop calling me old man damnit!!" Teuchi shouted at the guy before getting back to his work. While waiting for his food to get Rudra started to hum a song when he felt something small tackle him from the back.
"Hey Onii-chan!! Old man Teuchi!! Give me ramen, I am starving!!" Rudra looked down at his back to see a small blond boy with whiskers and blue eyes staring at him with a big smile on his face.
That's right, other than collecting information, the most significant thing Rudra did was meet with the protagonist. Naruto Uzumaki. In the flesh.