According to a legend an ordinary villager had to battle against demons to protect the world from this evil because gods were so bored they wanted to test if humans superior than demons, and the villager was just a random "chosen person" for the fun of gods. He fought for 30 days and 31 nights but he managed to defeat all the demons and cover their "gate" with rocks. Gods were so proud they gave him a CPU so he can play decent games and that CPU is called "Athlon" that means "the prize of the gods". This is also why a month can only be up to 31 days to honor this villager's victory over the demons to prove humans are worthy to exist. True story lolol.