In the interstellar age, humanity enters a period of rapid development. Subspace demons and eldritch gods from beyond the realms arrive one after another. An Yan gazes at the sea of xenomorphs and silently raises his fist.
All right, this is actually a story about a transmigrator who uses a System interface to do whatever he wants across the Myriad Worlds.
The first instance, the world of martial arts, is about to end.