human realm; world of humans
Used in religious, mythological, or fantasy contexts to distinguish the human world from the realms of gods, spirits, animals, or the dead. Often contrasted with 天界 (heavenly realm) or 冥界 (underworld).
In mythology, the gods watch over the human realm from the heavenly realm.
その物語の主人公は、人間界と魔界を行き来する。
The protagonist of that story travels back and forth between the human world and the demon world.