His existence was the result of Ash 's doing on changing his timeline to erase himself from being Saiki 's descendants .
His existence kills his ancestor , which is the reason why Nakoruru travels to the present to fix the timeline .
His existence was the result of Ash 's doing on changing his timeline to erase himself from being Saiki 's descendants and kills his ancestor , which is the reason why Nakoruru travels to the present to fix the timeline .