People are different. The more superior the bloodline, the easier it is to control power. Ordinary people without supernatural bloodlines can only occupy the bottom rungs of society, unable to achieve anything even if they try their best. Humans are different from other races. Humans aren't as good at magic and archery as elves. They aren't as good at casting metal and brewing alcohol as dwarves. They don't have the physique of orcs, and they don't have the freedom of merpeople underwater. However, if humans had a blood core, everything was possible. Human: "Oh my god, what a noble bloodline. You are the glory of mankind!" Elf: "I've never seen a magic genius like you." Dwarf: "No matter what kind of casting, it is easy for you." Orc: "You are the pride of us orcs. You are the most talented warrior in a millennium. You should be the Emperor of the Orcs!" Merpeople: "Son of God! Boohoo, the Son of God has arrived!"