Undead - Chapter 45

It was the year 3090 AD, the virtual reality net game “Swords and Magic” was developed on Earth, and the game would descend upon the world in ten years! In order to survive, the only way was to tame various powerful monsters in the magical world. That’s the only way to make oneself more powerful and take control of the gods’ power! Jiang Bai reincarnated to a time before the game was launched. By relying on his memory, he successfully obtained the Infinite Beast Taming Encyclopedia. Divine Beast Black Dragon Princess! Sacred Beast Dark Night Elf Queen… Jiang Bai asked, “Why is everyone else’s pet beasts animals, but mine is a bunch of gorgeous girls? I’m going to be sucked dry. I need help, quick.”

In a world teeming with Titans, Colossals, Gigantic Monsters and Kaiju's, Erian who reincarnated makes his living collecting scraps of low-grade Defective Genetic Serum, realised he transmigrated along with his system.

Follow Erian as he grows to become the strongest Disaster Grade Titan with the help of his Titan System!

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

Caught up in a ritual performed by a deity of another world, Eiji Choukai was then transported to another realm. The otherworldly deity responsible of the ritual looked at Eiji’s potential incarnations and quickly pulled out Classes like those from, “I Reincarnated Into a Vending Machine.”

But it seems the Classes available for the average person was not available to him. Only the “Parasite” Class was shown.

Without choice, Eiji grudgingly choose the Parasite Class.

His reincarnation into this new world seemed somewhat despondent, but after using his newfound powers, he suddenly realizes its true potential. It seems he’s able to amplify himself countless times by obtaining the powers of others. This luck of his was too good to be true. Seems his level might rise a little bit too much.