Building a World Class Empire in another World - Chapter 37: Finishing the wall

After a tear in reality pulls Kagari Shuya into a white room he discovers a futuristic interface for reincarnating in a different world. After looking through the different races and skills he unlocks a new race, Lucivault, a type of vampire with none of its characteristic weaknesses. All set to start his life in a new world, Shuya is confused to discover that he is enveloped in darkness. As it turns out something went wrong when he was transported and instead of appearing where he was supposed to, he appeared in an underground cave. Shuya faces untold dangers, runs for his life, before finding his way out of the underground world. After escaping he meets his Shishou and begins to learn to fight with a spear. There is also a cute black cat named Rollo.

One day, Zhang Fan, a poor medical student, receives a medical system from the future. This turns him into a new shining star in the medical field. Along the way, he must face medical corruption, competition, and infighting from other doctors, and even find time for a love life as he strives for the top of the medical field!

- Description from Novelupdates

Born and raised in a lab Tristan must figure out how to live and survive in the outside world. To make matters worse he has 4 others to look after. He's the oldest but is always being taken care of, to make sure his lab siblings want for nothing, Tristan will need to make a difficult decision. The goal is to provide for his siblings but he ends up living just like he was groomed to live. On top of everything else, there are four alphas who want to mate with him, and they don't mind sharing. Will Tristan accept his fate? Or will he runaway?

At the genesis of the world, the ‘Dark God Entropy’ was defeated in the fight between the five other Gods, and was sealed.