Kyoukai Senjou no Horizon chronicles the story of a futuristic civilization returned to Earth after constant warfare hindered them from traveling beyond the post-Apocalyptic Earth. At this stage, a small archipelago called the Divine States were the only hospitable land on Earth. In order to regain the space-faring technology they had lost after many years of war, they decided to recreate history with a book called the Testament as a guide.... more>>

It is the year 1648 in the Testament Era. Toori Aoi, Chancellor and Student Council President of the only academy on the airborne city-ship Musashi, faces the ten-year anniversary of the death of his childhood friend Horizon Ariadust in an accident. As he prepares to celebrate the occasion by proposing to P-01s (an automaton who looks exactly like Horizon) he discovers that his suspicion about P-01s’ appearance actually has a basis in truth; P-01s is in fact Horizon Ariadust, reborn into a robotic body. In addition to this, Horizon’s emotions had been stripped away and are now stored in eight powerful weapons called the Mortal Sin Armaments; which are now in the possession of key people in various established countries in the Divine States.

To retrieve the emotions of Horizon Ariadust, Toori Aoi along with his friends and allies begins a crusade against different obstacles as key events in history are recreated in a futuristic manner. <<less

The Abyss – representing pure annihilation, they have unparalleled power and follow the instinct to devour all life in the world. However, one day, a... more>> traitor came out from among them. “Miss Sylvija, it’s time to show your power.” “Eh~ But dessert, no sub finish.” She is still a fierce man today. <<less

One day, Elizabeth Barton, a villainous daughter who is a mob, suddenly regains her memory of her previous life and realizes that she has reincarnated in the world of the otome game ‘Royal Lovers’.... more>>

Elizabeth is dissatisfied with the world of this otome game, where only good-looking guys are given preferential treatment.

“That’s right. I should be the target of the capture.”

And so, the days of Elizabeth, the daughter of a duke, aiming to become a noble and fabulous capture target who would make the protagonist, the heroine, fall in love with her, began.

She dressed as a man, polished herself, was adored by other girls, and sometimes inexplicably deepened her bonds with the other capture targets. It's a heartwarming romantic comedy about her journey to achieve her goal. <<less

It's been 30 years since the world became connected to a place known as the Frontier.
Countries from all over the world started exploring the Frontier in search of new resources.... more>>

Now, if one has the appropriate qualifications, even civilians can pass through the gate and go to the Frontier.
A new profession was born that involves bringing back resources and selling them.
That profession is the [Adventurer].

Being an [Adventurer] is fraught with danger, but the rewards are also great.
In a world where such things have become the norm, there was a man who had no connection to any of it.
This man would go to his usual job and finish his work as always... or so he couldn't.

"Okita-kun, you don't need to come in from tomorrow."

That single sentence changed the life of a man who had been aiming for a normal life.

Okita, who barely had any savings, decided to become an [Adventurer] in order to make a living.
And during his first adventure, he acquired a skill unlike anything he'd ever seen or heard of.

That was [Alchemy].

From this moment on, the ordinary life of Hajime Okita began to shine with gold.
And at the same time, the [Golden Witch], who would break the common sense of the world, was born.

※This contains elements of TS (gender transformation).
※Entries marked with a ★ include perspectives from other characters. <<less