After running away that was chased by the people of the kingdom and also the empire, which made it very difficult for Tundra to get to the residence of Triola's grandfather, where Triola's grandfather, who had previously fought against criminals who which are people who are looking for underage children to kill.
They killed the children because they believed in a prophecy that said that there would be someone who would become the leader of the three nations and that person was born in the current generation, and the emperor of darkness who now believed in it and because of that he turned to the human kingdom with which they were allies and exterminated anyone born at this time.