There is no accurate information or evidence to suggest that Kaguya's killer, Ash Bones, can transcend space and time. The abilities and limitations of this character are not explicitly defined in any known source material.
but the databooks translated to them "flying beyond space and time"
I apologize for the confusion in my previous response. If the databooks mention that Ash Bones can "fly beyond space and time," then it suggests that the character has abilities that transcend the barriers of space and time. In that case, it can be interpreted that Ash Bones possesses the power to move freely through different dimensions or timelines. It's important to note that the databooks provide supplementary information and interpretations, but they may not always align with the storyline or be explicitly explored in the source material.
