Naruto System in One Piece - Chapter 40: Gomu Gomu no Mi

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.

Mimizuku, a small girl with chains on her wrists and ankles and the numbers “332” branded onto her forehead, wanders into the Forest of Night seeking to be eaten by a monster. However, when the ruler of the monsters, the mysterious and beautiful “King of Night,” refuses to eat her, she tries to formulate a way to convince him otherwise.

In a world where dungeons were an essential part of it, Rein was trying to conquer as many as possible. They were the key to gain powers in the fastest possible way. So, to reach his full potential and to become the strongest, he became a great dungeon conqueror.With his trusty friends and lovers, he was definitely going to reach the peak alongside everyone. Join Rein and see how he went from strong to stronger and then the strongest.__________________1. The harem would not be too large(I'm not sure how many but probably just 4-5 main and few other here and there). All the girls would be getting their time and story.2. The story is starting when the MC is in the middle of his growth stage and not at the very beginning. But his beginning will be mentioned in the story in some form.3. I don't think I need to mention this, but obviously it will not have any NTR, rape or that kind of stuff. It is actually quite a wholesome story focusing mainly on adventure, action and bit of romance and slice of life.

【Mr. Lin Wife's Love Story】“Boss, in one minute, your wife has scratched a limited edition sports car while driving.” “What, has the wife been hurt?” “No.” “That's good, you can directly charge the expenses of the car to my account. In future, you will handle similar situations in the same way, as long as my wife isn't hurt herself.” Secretary: Boss, do you have any principles left?【Mr. Lin's Marriage Trick】“Nannan, as long as you marry me, you can still do what you like, go where you want, and I will handle all the house chores.” “Hm, sounds pretty good.”【Post-Marriage Complaints】After marrying, An Nan found that a certain man secretly sabotaged her work, reducing it by half, and whenever she wanted to go somewhere, that man conveniently had free time, thus killing her plans for romance in its cradle. Damn, with things like this, why did she even get married: “Lin Mubai, I want a divorce.”(This story doesn't involve any third or fourth parties, even if one or two pop-up sometimes, they are just cannon fodder)