No, Obito is not Madara. Obito Uchiha is a former member of the Uchiha clan who was believed to have died during the Third Great Ninja War. However, he was later revealed to have been manipulated and used by Madara Uchiha, who was a legendary and powerful ninja. Madara is a different character who played a significant role in the history of the Naruto series, and Obito's actions were influenced by Madara's manipulation, but they are not the same person. **

There is no definitive answer to this question as Madara Uchiha's sexual orientation is not explicitly stated in the Naruto series. Some fans speculate that he may be homosexual based on his close relationship with Hashirama Senju, but this is open to interpretation. Ultimately, it is up to individual viewers to form their own opinions on Madara's sexuality. **

It is difficult to predict with certainty whether Madara will kill Sasuke, as it depends on the storyline and the decisions made by the creators of the Naruto series. However, in the series, Madara has shown a strong desire to manipulate and use Sasuke for his own purposes, rather than outright killing him. Ultimately, the outcome will depend on the direction the story takes and the choices made by the characters. **

Yes, Tobi is actually Madara Uchiha. Tobi initially presented himself as a goofy and bumbling character, but it was later revealed that he was actually the legendary Uchiha clan leader, Madara. He had been manipulating events from behind the scenes and using a false identity to achieve his goals. This revelation was a major plot twist in the Naruto series and had a significant impact on the storyline. **

Yes, Madara Uchiha does not return in Boruto. Madara's story concludes in Naruto Shippuden, and there is no indication that he will make a return in the Boruto series. The focus of Boruto is on the next generation of ninja, including Naruto's son, Boruto, and their own adventures and challenges. **

Madara Uchiha, a character from the anime series Naruto, possesses immense power and abilities, including the ability to use the Infinite Tsukuyomi, a genjutsu that can affect an entire planet. However, there is no direct evidence or indication in the series that Madara has the capability to physically destroy a planet. While he is undoubtedly a formidable and powerful character, the destruction of a planet is not within the scope of his demonstrated abilities. **

As of now, there is no official confirmation about Madara Uchiha returning in Boruto. However, it is always possible for characters to make a comeback in the Naruto/Boruto universe, especially with the use of time travel, alternate dimensions, or other plot devices. Fans of the series continue to speculate and hope for the return of Madara, but for now, it remains uncertain. **

Madara helps Sasuke because he sees him as a potential ally in his plan to bring about a world free from conflict and suffering. Madara also sees Sasuke as a means to further his own goals and to manipulate him into carrying out his own agenda. Additionally, Madara may see Sasuke as a way to continue his own legacy and ensure that his plans are carried out even after his own death. **