In 'A Night with the Emperor' manhwa, the story centers around a chance meeting at night between a commoner and the emperor. This leads to a series of events involving palace politics, forbidden love, and the characters' growth. The plot is rich with emotional ups and downs and keeps readers on the edge of their seats.
One way could be to have the child adopted by a trusted family in a remote area. Another option is to give the child a magical charm that makes them invisible to certain people. You could also have the child live in a hidden village protected by powerful magic.
Well, one way could be to change the child's appearance and give them a new identity. Another option could be to send them to a remote location that's not easily accessible. It really depends on the context and the specific plot of the manhwa.
One similar manhwa could be 'Tower of God'. It has an intricate world - building with different levels and powers, much like 'the sword of the emperor' might have. Another is 'Solo Leveling' which features a protagonist growing in power in a fantasy world. And 'The Beginning After The End' also has elements of a character evolving in a complex, magical setting.
Another theme could be loyalty. Since it's related to the emperor, there might be characters who are loyal to the emperor or the idea of the imperial power symbolized by the sword. There could also be those who oppose it, creating conflict. And perhaps the theme of destiny. The sword might be tied to a certain destiny, either for the empire or for the characters involved with it.