The Setting The Monster Girl’s World is situated in the Virgo Constellation, orbiting around its brightest star, Spica: Spica
The brightest star in the constellation of Virgo, and the 15th brightest star in the night sky. This star is called Eleandri by the inhabitants of Edinnu (The MG’s Home World) It is a a Blue Giant, a massive star with more than 10 times the mass of the Sun and seven times the Sun's radius. Spica is close binary star whose components remain sufficiently close together that they cannot be resolved as individual stars through a telescope. It is 260 light years distant from Earth.
Edinnu (Pronunciation: Edheen)
Derived from an Aramaic word which means "fruitful and well-watered", Edinnu is located within the habitable zone — the region surrounding a star that’s not too hot and not too cold for liquid water to exist on a planetary surface — of Spica; it is 6 times the size of Earth, with radius of 38,268.822 km (23,779.146 mi).
A fictional “Super Earth” class M planet, which means, a world that is bigger than our planet and have the potential to possess a rocky surface, its atmosphere is composed of nitrogen and oxygen and have an abundance of liquid water necessary for carbon-based life to exist. Extensive plant and animal life flourishes and a sentient race or races are also present. This world is rich in minerals and its gravity might be slightly less or slightly more than the gravity of Earth (Which could explain why harpies (and other flying creatures can take off with such small wings).
Like other class M worlds, Edinnu emits electromagnetic radiation, but among the range of all possible frequencies of radiation, there is one that none other “Class M” planet posses. Almost imposible to classify and detect by human technology, this strange type of radiation lies (although, some other people might say that it complements them) between 3 regions of the electromagnetic spectrum, the ultraviolet, visible and infrared regions. This new and rare type of radiation is the Demonic Energy of the Succubi.
The main differences between Earth and Edinnu are, of course, the size and distribution of the continental masses. The most significant difference is that the island nation of Zipangu, is like three and a half times bigger than the Japan from our world.
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The Demon Realm and Demondoms Like The Wandering Schoolar stated before, thanks to the thick concentration of the Demonic Energy of the succubi, it's dark even during day time, despite Spica being a blue giant. Contrary to popular belief, the Demon Realm is not a barren land; it is full of life, and its environs provide a diverse habitat for both flora and fauna.
The enormous concentration of the Demonic Energy of the succubi floating in the air, turns normal light into a nostalgic crimson light that illuminates the demon realm; it seems like if this place was frozen in time, always basking in an eternal sunset, at least during day time.
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It is at dusk when the macabre nature of the Demon Realm reveals its former glory. The warm and beautiful crimson light disappears only to be slowly replaced by an all-consuming darkness. A dim light that apparently comes from nowhere it’s the only source of illumination. A dense fog begins to rise and, combined with the poor, shadowy light, it creates an eerie atmosphere that last approximately an hour and a half. This time of the day, it is known as “The Dead Hour” and for Monsters, it would the equivalent of Midnight.
It is a time when Edinnu intersects with other worlds and realities, a time when weird creatures and beings can be seen lurking in the shadows of dense and lonely woods and deserted roads, or at least that’s what succubi says. It should be noted that this phenomenon only occurs in the first and original Demon Realm where the immense castle of the Great Succubus Demon Lord, Lilith, lies.
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When ”The Dead Hour” comes to an end, another face of the Demon Realm shows up ; its ominously beautiful face. The Demon Realm it's even brighter during the night than it is during the day, illuminated by the moonlight, the highly concentrated demonic energy of the succubi, makes the leaves of the black pitch trees shine in blue. Bathed by the moonlight and soaked in demonic energy, the rest of the flora ignites in a mix of bioluminescent colors that provide Demondoms with an eerie yet appealing atmosphere
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Akkadia: Castle Town of the Succubi
Later...
Gerbera: Bright Green Demon Realm/Demondom ruled by Lotan, 43th Lilim Princess of the Demon Realm
Later...
Gerbera's Flag
Spoiler: show