Demon Princess Magical Chaos

Death and reincarnation. Kuroe Makoto, the tomboyish ace of her high school track-and-field club, never spared a thought for these things before. However, when she falls asleep in her Tokyo home after an exhausting marathon and wakes up in a fantasy world, those concepts become her reality. Unlike common light novel settings, she isn't reincarnated as the naturally good-looking and talented human hero who gathers a harem effortlessly. In fact, she isn't reincarnated as a human at all. She is reborn as "Chaos", child of the demon queen and heir to a kingdom at war with humanity.  

Kuroe Makoto, now known as Chaos to demons and Chloe Marcott to humans, never thought that in a fantasy world filled with sword and sorcery, she would attend school again. Her fake human heart beats faster when she thinks of the fact that this is a magic school, the kind she has read about in so many stories. The prospect of learning spells and meeting new and interesting people has her unexpectedly looking forward to sitting in a classroom again. However, with every new adventure comes new dangers, new friends, and new enemies. 

After a disastrous battle against the top mages of the Royal Academy, Chaos finds herself separated from her beloved dark elf Kamii and stranded in the middle of a desert with the fallen angel Hestia. It's the beginning of an arduous odyssey, as two geographically challenged girls have to navigate a nation that doesn't speak their language, perpetuates slavery, and lacks all basic magical appliances, including interactive maps.  

But something goes wrong during the teleportation, and she is separated from her other half...once again. With Mithra's help, she has to return to Kongenssoevn to bring those she left behind to the safety of the Dominion before locating Asoko. But first comes the long-awaited reunion with her mother. The young Crawling Chaos gains insights into her past life, faces betrayal, and makes a new unlikely ally. Her involuntary journey even takes her into space, where she will learn the terrible secret about the world she reincarnated into. 

When she discovers a small village of natives, the world-weary reincarnator finds peace of mind for the first time in forever. Lulled by the tranquil atmosphere, she forgets her worries. But when outsiders arrive, they bring war onto the doorsteps of her new home. Once more, the Crawling Chaos gathers her will to fight. In a land where gods walk among the people, Chaos discovers herself anew. Finding pieces of her past and making new friends along the way, the reincarnated high school girl goes on a journey that shall go down in the annals of history.

The surprise attack on Arkaim has left the Dominion in shambles. Chaos is missing, Asoko is frozen, and an Alliance invasion army over a million strong lands on the shores of the demon nation. Rolan Helt, propped up as the Chosen One and hero of this age by the gods, is placed as the figurehead of this war for extermination as the human army sweeps across the lands almost unhindered.

Reunited: Chaos returns from her year-long exile and finds her home in ruins. The human-led Alliance has conquered over half the Dominion's lands and is set to overrun the demons' final bastion. But finally reunited with her lovers and accompanied by her new allies, the crown princess is ready to reclaim her nation. Asoko, thawed from her prison of Eternal Ice, aids the dwarves in their war against the menace from below. Before the other half of Chaos can return to the Dominion, she and her companions will come face to face with a new destiny in the faraway land of fire and ice.

The Dominion is reclaimed after a lengthy and costly battle, but the war for the fate of the world is far from over. Looming on the horizon are the few, yet overwhelming, obstacles to lasting peace. It is time to confront the remaining Old Humans and bring an end to their reign once and for all. The final war takes Chaos and her comrades to their physical and mental limits and, ultimately, even across space. At the edge of reality, the hidden truth about Old Humanity and Chaos's origins is finally revealed.