The World Living with Different Species

In 1999, Earth underwent a major transformation. A three-way conflict erupted between humans, beings from another world, and aliens from space as the latter invaded Earth through dimensional gates. This war, known as the Cross War, lasted for two months, and Earth prevailed by leveraging its home-ground advantage and numerical superiority. The aliens and beings from the other world lost their way back home and were left on Earth. After a month, they reluctantly accepted the settlement offers from various Earth governments, forming a cross-treaty to temporarily represent their respective forces before settling down. Now, in the 2010s, the coexistence of humans and different races has become commonplace in Earth's society.

Initially, the different races were scorned by humans as remnants of invaders, but after arduous efforts, they were finally recognized as members of society. Of course, there are still a few cases of discrimination against them.

#List of different races settled on Earth:
1. Demon Race: A race from another world with horns on their heads, bat wings on their backs, and red, glowing eyes. Male demons are called incubi, and female demons are called succubi. They are inherently violent and hedonistic, but they have learned to suppress their nature as much as possible to settle on Earth.
2. Giant Race: A giant race from another world that looks exactly like humans but has an average height of 4 meters. They are physically strong and have great strength, making them popular for jobs that require strength, such as construction work, and as advertising models.
3. Vampire Race: A human-like race from another world with pale skin, a slender build, sharp fangs, and red eyes. They are weak to sunlight, so they wear hats and coats during the day and apply thick sunscreen when the weather is hot. They also dislike the smell of garlic. However, they don't react much to crosses. They eat ordinary food well, but instinctively prefer blood. There are companies that sell edible blood to the vampire race.
4. Goblin Race: A race from another world with green or blue skin, pointed ears, and a small size of 1.2 meters. Male goblins have hooked noses, while female goblins look like ordinary humans. They are not very intelligent and are weaker than humans physically, but they are very diligent, so they mainly do cleaning work.
5. Dwarf Race: A human-like race from another world with long hair and beards, and slightly shorter than humans. They are very skilled with their hands, and there are many artisans who make handmade art.
6. Android Race: A bipedal robot race from an alien planet. In the past, they were a race that equipped weapons on their bodies, but after settling on Earth, the act of equipping weapons on their bodies was prohibited by Earth's laws. To better understand humans, the new masters of their lives on Earth, the Android race began to create themselves in female and male forms. Their appearance is very inorganic and robotic, but their body proportions are said to be very beautiful.
7. Elf Race: A race from an alien planet with beautiful appearances and pointed ears. They are weaker than humans physically, but they are very agile and learn quickly. Their lifespan is also slightly longer than humans. They are the most adaptable of the different races that have settled on Earth.
8. Siren Race: A human-like race from an alien planet with feathers on their bodies. They have a talent for singing, and if they study enough, they become singers with excellent vocal skills. However, most of them are more interested in other fields than singing.