My Pet Marshal Wants My Head: I'm the Emperor He Killed

Xu Sili died, then woke up to a laser gun pointed at his head. He was the new, weak Emperor of a crumbling alien empire, on the verge of destruction. His would-be assassin? Si Sheng, the powerful Grand Marshal—a virtual character Xu Sili meticulously raised in his past life! Now, powerless and cornered, Xu Sili discovers a unique 'Singing' talent: he can seize control of Si Sheng through ancient, bewitching chants. The very being who betrayed him is now his weapon. But as he forces his 'pet' to kneel, he realizes controlling Si Sheng is only the first step. This dying empire faces interstellar beasts, a hostile alliance, and betrayal from within. Can he rebuild a civilization from ruins, or will his own creation truly spell his end?