Invincible: the Strongest Slave Master in Another World

Invincible + Multi-race + Western Fantasy European Style Liu Can accidentally traveled through time and obtained a system in which contracted servants will become stronger. After that, he met several companions. I thought that becoming a servant was a terrible thing, but I never expected that the master Liu Can would take care of them like his own children. When many powerful empires saw Liu Can, they did not dare to claim to be an empire. Because the servants around him can kill the empire instantly! ! ! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.