MTL - I Have a System of Orcs - ~ Chapter 100

Amamiya Hiroto is unlucky. His life consisted of misfortune after misfortune, culminating in an unlucky death during an incident on a school boat trip, trying to save a girl he barely knew. After death, he met a god of reincarnation who requested that the hundred or so dead passengers—one of them being the girl he tried in vain to save—be reincarnated into another world.

In a fantasy world ruled by kings and queens possessing great magical power, Kant Icurus Maybale is the only prince on the Aceaton Continent who does not possess magic. However, what he does possess, that nobody else does, is his past memories of the time when he was a Mechanical Engineer on Earth. With nothing but knowledge, brains, and wisdom, he dares to bring this medieval-esque fantasy world into the industrial era, and gain unimaginable wealth and power. Along the way, powerful forces that feel threatened by his rise in dominance will do whatever it takes to bring him down! Will he be able to conquer the continent, and potentially the world, to usher in a new age, or will he get crushed by the existing world order?

Finally caught up with the trend of crossing. Wait, everyone else has a golden finger when they cross, how can I become a little beggar after crossing!

Fortunately, the memory is still there, watching how I transformed from a little beggar to a top rich man!

- Description from novelbuddy

Inside the 3000m underwater station, an international group of scientists and engineers live and research for possible settlement of entire human race. Park Mu-hyun, a reserved dentist joins the station in hopes for a quaint life in the deep sea. However, things quickly go south when the station gets attacked by a mysterious group of people.As the water starts to fill in the living quarters, Park Mu-hyun grabs his backpack and immediately runs for his life, but where to? Now, the peaceful station becomes the ultimate survival stage of cult madness and chaos.