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Intro. Mamono realms, also translated as monster realms or makai, are areas in the Monster Girl Encyclopedia world in which the environment, down to the very air, has been altered to create habitats ideal for monsters and incubi to live and exhibit their full abilities. The monsters' mamono mana warps the environment in such lands, producing an ominous ecology of black trees, pink rivers, blood moons, and aphrodisiac-spitting bugs (albeit, this description does not apply to all such realms). Normal lands overrun by monsters can be transformed into these realms when the mamono mana they release builds to a critical point, causing a metamorphosis within the lifeforms of the ecosystem.

Dark Slime - Monster Girl

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