Chairman's Planet: Portal Space Fantasy (Sequel to Firesnake series) (Red Star Book 1) by Rayner Ye

Maki is a six-year-old boy with secret knowledge. He witnessed an alien invasion on his homeworld, two hundred years in the future. While he starts a new life in another solar system, his father orders him to keep the truth under wraps. But Maki is stubborn. He won't give up his desire to stop the Chairman's massacre. In a bid to succeed, Maki creeps into the secret service's teleportation room and discovers classified information. He becomes the youngest agent in the headquarters and a good one, too. No matter his heroic acts, he still has a serious dilemma: he needs help. But he already promised his father he'd never lie to him again. He has two choices: betray his father's trust or accept the massacre of a whole world's population.