MTL - Mermaid Effect - Chapter 23

Violet skies, a world undergoing massive changes, a deficient moon, interlinking voids…
When the world experienced a cataclysmic event,the majority of living things ceased to exist. Although humanity survived by hiding in the last safe zones, humans had to face mutated dire beasts and colossal source beasts that could break through the space barrier and enter the earth at any second.
Luo Yunyang, a young man who grew up in those calamitous times, obtained an attribute regulator and set out to walk the path of supremacy!

- Description from novelupdates

Growing up in a place where the rule of the jungle is law, the simple yet cunning Shaar is thrown into the chaotic world of war and political turbulence. After a chance meeting with a mysterious young girl, his destiny is forever changed as he embarks on a journey, joining the Byzantine army and climbing its ranks. With his bizarre beauty standards, will he ever return the affection of the girls that will follow him? Will he ever learn about his real parents? What lies ahead of him is a journey of strange humor and adventure.

Luo Jing traveled through, and traveled to the outer door of the Demonic Soul Refining Sect, and became a miscellaneous fish disciple.

There is a powerful senior sister in the door, who has been pestering him. Just when Luo Jing was thinking about whether to “be sensible” and practiced at night, he found that his girlfriend had also crossed over with him, and the two could meet in a dream.

The girlfriend actually traveled to the Immortal Gate of the Right Way and became the direct disciple of the elder of the Immortal Sect.

Shen Qingxuan: Can you stay away from those demon girls?

Luo Jing: I’ve tried my best to stay away from them! It was they who wanted to make me a stove, and I didn’t want to!

This book is also known as “My Husband with a Demon-sucking Female Physique”, “In order to keep my boyfriend, I must practice hard”, “My fairy world can’t be a long-distance relationship”

- Description from novelbuddy

Cliche. Another monster progression story. That was probably what you thought when you read the title of my story. And, I can't lie, for the most part, it probably is.But, what else am I supposed to do when I've been thrusted into a world that could kill me in an instant? There's nothing to do but to progress, to devour and evolve. You would do the same too.Such is the basis of a monster.Such is the right of any living being.So that's what I did. I ate, I killed and I hoarded anything I could get my big limbs on. Friendship, allies and love? There used to be a little god calling himself “Heaven's Equal” who spouted of such things, before I ate him. The world went pretty quiet after that.Follow my story. Read for yourself how I evolved from a little monster in a lake I thought was the ocean, all the way into the Titan Of Destruction.What To Expect:- A relatively quick progression story- Ruthless, I mean - Fang Yuag levels - of ruthless protagonist.- A system? that grows stronger along with the protagonist- Big Monsters Duking It Out, with minimal humans/beastmen/elves, etc. . .focus. Basically, monsterverse without annoying ass humans ruining the show.- Did I mention that the protagonist was pretty evil?