Read I Saved The Demon King Manga:
The infamous Big Demon actually accepted a 4-year-old female apprentice! Do you want to see Demon raise a baby? The 4-year-old female apprentice said that she didn’t really think much about it. She was just a female college student who accidentally transverse into a book. What’s the matter with her fate and grievances and Xiuxian Daguai? But this villain Demon Lord seems to have something more.. hidden…