DxD: Building A Demon Clan From Scratch. - Chapter 8: Archivist Devil

For a long time, Malin always felt that Fate had been quite generous to him. Although he had to face that life-threatening job every day, as long as he had the lovely Leopard Girl cooking delicious food for him daily, and as long as there was meat to eat and cats to stroke, life wasn't too unbearable. Working a bit harder and facing some difficulties on the job weren't really an issue for a man.Moreover, being able to live two lives meant one shouldn't have too high demands, right, Mr. Different-Kind?Having said that, and without waiting for an answer, the young man snapped his fingers, and the white flame on his fingertip lit the tobacco in his other hand, then he flicked it towards the non-human entity on the stake.Welcome to Abield, to witness the last splendor of the steampunk era.And the madness.

Talent, appearance, power.

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.

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.

With the revival of spiritual energy and the breakdown of the order of species, it is a difficult test whether human beings can still stand at the top of the biological chain.

(There is already an old book, The Strongest Descends in the City, you can read it.)

- Description from novelbuddy