Myriad Realms: The Holy Assassin Naruto

Across the cosmos, through time and space and the Myriad Worlds, if you exist in this world, then countless different versions of you exist across different planes and timelines in the universe. Likewise, at every point in time, there are powerful figures of all kinds. Naruto obtains a Saint Killer card from the DC main universe.

The Saint Killer has two pistols and infinite bullets. Every shot is fatal, every shot hits its mark, and even God can be killed. Can anyone stand up to that?