If Obito had successfully captured all the Tailed Beasts right away, it would have drastically changed the storyline and the outcome of the Naruto series. Here are some possible scenarios that could have unfolded: 1. Rise of the Infinite Tsukuyomi: With the Tailed Beasts under his control, Obito could have used their immense power to cast the Infinite Tsukuyomi, a genjutsu that would trap the entire world in a dream-like state. This would have resulted in Obito's ultimate goal of creating a world where everyone is united and free from pain. 2. Uchiha Madara's revival: Obito intended to revive the legendary Uchiha Madara to aid him in his plan. With the Tailed Beasts as his power source, Obito could have successfully brought Madara back to life. With Madara's immense power and skills, the duo would have been nearly invincible, making it extremely difficult for the Allied Shinobi Forces to stop them. 3. Akatsuki's dominance: The capture of the Tailed Beasts would have ensured Akatsuki's domination. With the combined power of the Tailed Beasts, Akatsuki would have become unstoppable, leading to the downfall of the shinobi nations and the establishment of a new world order under their control. 4. Resistance from powerful individuals: Despite the immense power the Tailed Beasts possess, there are several characters in the series who could potentially resist Obito's control. Characters like Naruto Uzumaki, Sasuke Uchiha, Killer Bee, and other powerful shinobi, with their unique abilities and fighting skills, could have joined forces to challenge Obito's reign and free the Tailed Beasts from his control. Ultimately, the course of events would have been drastically altered if Obito had captured the Tailed Beasts right away. The series would have focused on the struggle of the remaining ninja to overcome Obito and protect the world from his genjutsu or find a way to free the Tailed Beasts and restore balance.

If Itachi had fought Obito, it would have been an intense battle with significant consequences for the Naruto storyline. Here are a few possible outcomes: 1. Itachi's genjutsu prowess: Itachi was known for his exceptional genjutsu skills, including the Mangekyou Sharingan technique, Tsukuyomi. If Itachi engaged Obito in combat, he would have used his genjutsu to try and deceive and incapacitate Obito. Itachi's skills in illusions might have given him an advantage in manipulating Obito's perception, buying him time and opportunities to strike. 2. Susano'o vs. Kamui: Itachi possessed the Mangekyou Sharingan abilities, Susanoo and Amaterasu, which Obito may have struggled to counter effectively. Susano'o is a powerful defensive and offensive technique that could have protected Itachi from Obito's attacks, while Amaterasu's inextinguishable black flames would have presented a significant challenge for Obito to avoid or extinguish using his intangibility granted by the Sharingan's Kamui ability. 3. Discovering Obito's true intentions: Itachi was an intelligent and perceptive shinobi. If he had fought Obito, Itachi might have been able to uncover his true motives and reveal them to the other characters, altering their perceptions of Obito and potentially swaying some to join forces against him. Itachi's knowledge of the Uchiha clan's history and the secrets surrounding the village could have played a crucial role in unraveling Obito's deception. 4. Sacrificing himself for a greater cause: Itachi was known for his willingness to make sacrifices for the sake of the village and his loved ones. If Itachi fought Obito, he might have made a calculated decision to sacrifice himself to protect the village or to find a way to weaken Obito's position significantly. This sacrifice could have had significant repercussions on the storyline, creating new alliances and motivations for other characters. While it's challenging to predict precisely how a battle between Itachi and Obito would unfold, there is no doubt that it would have been a clash of formidable abilities and strategies. The outcome would have had a significant impact on the direction of the Naruto series, potentially altering the alliances and fates of several characters.