One Piece: God of Space - Chapter 518 The Hidden Function of the Endless

Yang Yi crossed over the world with a storage space with him. He ended up in some desolate wilderness populated by flying beasts and dangerous predators and also crawling poisonous bugs and snakes. To prevent getting bitten in the ass by venomous bugs when going to the toilet, let the great infrastructure begins –
Our goals are:
Eat well till full stomach.
Having clothes to wear but also being good looking.
To have a house that could cover all seasons.
Roads that leads to every place; develop agriculture, industry and commerce together.
No shortage of both material and spiritual needs.
He was DETERMINED to build a safe, comfortable and prosperous modern city in the wild world together with the native tribe with max efforts.

- Description from Novelupdates

Satou Shiki a Japan present-day university student suddenly one day he got attacked by a slasher when he open his eyes he was already transferred to another world’s labyrinth city. In that another world he who was awakened to do a lot of “things”.

Before Feng Yi ascended the throne, no one wanted to marry him, an unexistent and unfavored prince. After ascending the throne, the harem was filled with the daughters of important officials in the court.

Looking at the hurt eyes and feeling upset, it is fortunate that they all feel that they have dirty their own dragon bodies.

He decided to choose a hot-tempered, arrogant, domineering and jealous woman into the palace, and put all these rubbish in the cold palace for him.

Song Yunzhao traveled to ancient times for 14 years, and has been developing obscenely. He just waited for the plot to start, and then turned into an arrogant, domineering, vicious and jealous villain. When he was defeated, he could choose a husband and live happily.

Later, Song Yunzhao looked at the doting Majesty smiling at her and said, “Zhaozhao, come here.”

Song Yunzhao only felt that something was wrong, the soles of his feet felt cold, and the dog emperor had a gentle face and cold eyes, he clearly wanted to use her as a weapon!

- Description from novelbuddy

In the far future humanity is threatened by monstrous beings called kaiju now humans have expanded across the galaxy with the development of new techniques and fleets of mechs.Alto a young boy with dreams of becoming a great mech pilot is forced to be a mech designer. He finds a strange technology that opens his eyes to the vast secrets of the galaxy, now with a new purpose Alto must become something the world has never seen before.A/N: Just wanna do a good sci-fi book