While under Momoshiki's possession, Boruto gains increased chakra levels and other abilities from the Otsutsuki clan.
After defeating Momoshiki Otsutsuki alongside his father, Boruto discovers a mysterious seal called Karma on his hand. This seal serves as a vessel for Momoshiki's data gradually extracting from Boruto's body. Once the extraction process is complete, Boruto will vanish, replaced entirely by Momoshiki. This is the Otsutsuki's method of reincarnation.
According to the manga, Momoshiki's extraction process has reached 70-80%. This means Boruto will soon be completely overtaken by Momoshiki. Each time Momoshiki takes control, Boruto's strength increases due to enhanced chakra and other Otsutsuki powers.
Odama Rasengan
Boruto is unable to perform the massive Rasengan or Odama Rasengan because his chakra reserves are not as extensive as Naruto's. However, under Momoshiki's influence, Boruto can utilize this technique. In Chapter 65, we witnessed Momoshiki executing a massive Rasengan using Boruto's body.
Rasendan
Asshuku Rasengan, or High Compression Rasengan, is a new technique utilized by Boruto. In this technique, Boruto compresses a regular-sized Rasengan into a smaller form to increase the chakra pressure, making it a highly dangerous technique when used at close range.
Even within Boruto's body, Momoshiki can use this technique, but with a large amount of chakra, it becomes incredibly powerful and is called Rasendan. At first glance, Rasendan may not seem different from Naruto's mini Rasengan, but it has the ability to be shot like a bullet at extremely high speed. Additionally, the stance for using Rasendan is different; Boruto must raise his right hand and adopt a posture as if aiming a gun. The swirling bullet is created from the tips of his two fingers and speeds off at an incredibly fast pace.
Byakugan
In reality, despite being a descendant of the Hyuga, Boruto has been confirmed not to possess the Byakugan. However, under Momoshiki's control, Boruto possesses this eye on his right side, replacing the position of his Jogan.
Here, we can understand that Boruto is also a distant descendant of the Otsutsuki clan (he carries the bloodline of the Uzumaki and Hyuga - two clans with distant origins from the Otsutsuki). Therefore, when possessed by Momoshiki, Boruto may have awakened the Byakugan - a limited bloodline trait that most Otsutsuki members possess. This makes Boruto, under Momoshiki's control, even more dangerous.
In summary, when Momoshiki resides within Boruto's body, he can generate a powerful and swift version of Rasengan thanks to the large amount of chakra from Momoshiki, along with the power of the Byakugan. All of this combination is facilitated by the Karma seal, which plays a crucial role in combining and transferring power between Boruto and Momoshiki. This demonstrates that although Boruto is not fully possessed by Momoshiki at the moment, he still has the ability to 'access' the entire strength and chakra of this Otsutsuki clan.
Having read this far, what do you think about this? Will Boruto continue to inherit any strength from Momoshiki in the future? Will Boruto's fate be affected when completely controlled by Momoshiki? Please share your thoughts for us to discuss!