MTL - The Fallen Merman - Chapter 238

One day, Luo Jian woke up from his sleep and found himself in a locked chamber where the door and window were all sealed. A note with a few lines written on it was tacked to the wall: “Escape from this room within an hour, otherwise, you will die.”

There is a sequel called Reincarnation Night (轮回之夜) that takes place in the same universe but has different main characters

- Description from Novelupdates

Char transmigrated!He transmigrated to the game he created!Awesome!I want to tame beasts!I want to manage a castle!I want to drive the castle around the world!But, why are there Elves, Half-Elves, Dwarves, Half-Beasts, Shift Beasts, Shark Lizard Beasts, Greenfoot Dragon Snakes, Multi-headed Lizard Hydras, Flame Skulls, Death Knights here?I didn't design it like this!Also, what in the world are Lord of Dawn Losanda, Forest Goddess Melikai, God of Knowledge Ogma, God of Lies Shirek, God of Tyranny Bane, and the Spider Demon Queen Rose?And there's a god battle, too?!Too dangerous, I guess I won't travel the world just yet.First, let's set a small goal: become a Fantasy Lord first!

[Complete your story by challenging countless monsters, demons, and legends]

This is the last sentence I saw before I lost my mind.

And it’s one sentence that I’m still holding on to.

That’s how the journey of killing monsters and wandering in search of all kinds of rumours began.

And it will continue.

Until the day I get out of this damn game.

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.