After Isshiki was killed, he mentioned to Code that he wanted him to carry out the will of the Otsutsuki.

Source: https://gamerant.com/boruto-shinjutsu-explained/

Also known as the Sage of Six Paths, Hagoromo Otsutsuki is arguably the strongest character in the entire series.

Source: https://www.cbr.com/naruto-rinnegan-users-ranked/

Combining the two powers, Kakashi awoke the Full-Body Susanoo which could even combat Kaguya Otsutsuki.

Source: https://www.cbr.com/naruto-susanoo-users-ranked/

Currently, the main focus of the series lies on the Otsutsuki Clan and it's many members, all bearing the same goal of undoing Kaguya's failure.

Source: https://gamerant.com/boruto-everything-we-know-about-the-otsutsuki-clan-so-far/

Despite this, in the series, Naruto and Sasuke's fight against Momoshiki Otsutsuki was even more epic than the fans had hoped for.

Source: https://gamerant.com/best-fights-shonen-anime/

For example, Jigen, who was a vessel of Isshiki Otsutsuki, was able to fight against both Naruto and Sasuke at the same time.

Source: https://gamerant.com/boruto-ways-anime-redeem-itself/

In essence, both Boruto and Kawaki hold the power of the Otsutsuki Clan, and, as such, possess enough skill to rival the likes of Naruto and Sasuke.

Source: https://gamerant.com/boruto-kawaki-surpass-naruto-sasuke/

Kawaki decided to eradicate Momoshiki, along with all the other Otsutsuki members.

Source: https://gamerant.com/boruto-naruto-freed-explained/

The Otsutsuki Clan is easily the strongest family to ever appear in the franchise.

Source: https://www.cbr.com/naruto-all-otsutsuki-clan-members-ranked-strength/

With an already overarching challenge of negating the prequel’s power creep, set off on an ambitious start, with many hopeful that it may even reverse the damage done to the franchise in the form of Kaguya Otsutsuki.

Source: https://gamerant.com/how-power-creep-has-become-borutos-biggest-issue/