MTL - My Wife is the Villain King Shark - Chapter 9

A story about a history teacher gaming-addict with familial trauma, and a peculiar woman seemingly stuck out of time and beyond out of touch.The two have been thrust into the weird and whimsical world of Altros, a planet with divides born of very real superhuman strength cursory of an odd ranking system, and, naturally, species differences.Not exactly the best of news for our resident Scottish history teacher whose ears have changed into fox ones alongside his nine new fluffy tails.First though, Darren, or Lone, or whatever else the weird system claims he's called, has to figure out how to live with his new companion Sofia, for seemingly forever while also just barely managing to survive being stranded on a monster-infested island with a self-proclaimed former-immortal who can see despite being blind, can freely teleport, and who also, of course, seems prone to experience bouts of extreme depression.Not an ideal situation when he himself hasn't been in a great headspace for over a decade now. But hey, at least there's an incredibly expansive litRPG system to keep the both of them entertained, right? That'll fight off the fear of death, surely.

Lucas, a human transmigrated from Earth to a fantasy world, strives to live a peaceful life with his sister despite lacking special abilities or cheats. However, the world's cruelty shatters his tranquility when his beautiful sister is taken from him, and he is framed for her death. Devastated and powerless, Lucas is forced to flee.During his escape, Lucas grows stronger, eventually earning the feared title of the Demon God. Despite lacking inherent talent or cheats, his relentless pursuit of knowledge allows him to uncover his enemies' weaknesses, leading him to victory time and again.One fateful day, while praying for his sister, Lucas falls into a trap and is killed. His enemies have used his sister's memory against him, igniting a fury within Lucas as he dies, his final regret being his inability to save her. In his last moments, he wishes for a second chance to act first and protect his sister.[System Notification: Host has died a second time][Cheat Activation Sequence Initiated][Cheat Activated: Divine Mask - God Clone System Online]

This novel is also known as Deep Ocean Survival: A Submarine From The Start

The whole people traveled through, and everyone was trapped in the ocean abyss two thousand meters below the alien ice layer!

There is only one basic pioneer ship at the start!

Food, oxygen, water pressure…
Unpredictable seabed turbulence…
The powerful and terrifying Abyss Siren…
Evil and mysterious parasitic flora…

With all kinds of potential threats that follow everywhere, this road to survival is doomed to be extremely difficult!

However, when everyone was desperate for the hardships of survival, Meng Lei was calm and composed.

Because he found that he could actually see the system prompt!

“At a distance of 500 meters, a shipwreck of an alien pioneer was found, and the supplies inside are enough to make you rich!”

“At a distance of 1200 meters, I found a doomsday worm, rush up and kill it, and you will become the brightest cub wandering in the dark abyss!”

“The distance is 4,500 meters, and the ruins of an alien civilization are found. The danger level is SSS! Why are you standing still, turn around and run!”

- Description from novelbuddy

She was used by her boyfriend to trap someone. Unexpectedly, things did not go as planned.