Xi Ling Diguo 

This isn't about a war between empires, nor is it about a journey across another world. Trust me. This isn't about leveling up or cultivation, either. The truth is, this is a very serious science fiction on saving the world. As the reader, you have to take it seriously, okay? No...? Alright, then... This story features a certain nerd who suddenly became the head of an empire. Along the way, he ends up involuntarily adopting a bunch of little girls thanks to his fatherly aspects. This hilarious tale goes on between the ambitionless man with his regiment of powerful freeloaders who fell from the sky. Once again, for the record, this is a very serious story.