The supporting character's harem is very normal - Chapter 354 Dealing with the Empress

This story is centered around the man named Yi Ji-Hyuk, who has spent 1000 years in a Medieval Western fantasy-like world before returning back to the modern-day Earth. When he returns, he finds that his home is facing monster threats, and that humans with superpowers have appeared to protect the innocent people of Earth.

The Huaxia Continent is a land of great abundance, inhabited primarily by the Han people. Three hundred years ago, the continent was unified under a single dynasty. However, due to later oppressive taxation and exploitation, that dynasty eventually collapsed, plunging the land into an era of warlords and divided power.In this chaotic environment, the status of martial arts experts rose to unprecedented heights. The major sects and noble families that trained these martial artists became powerful local forces, each dominating their own region. The product of the alliance of these powerful factions the Martial Alliance became the largest organization in the martial world. In the eyes of the people, the leader of the Martial Alliance held even greater prestige than the rulers of the divided territories.Wuxia, Adult, Harem, Mature, Dark, Drama, Incest, NTR, Netorare, NTL, Netori, Romance, Threesome, Orgy, R18, Smut, Action, Adventure

After picking up a phone on the streets, Feng Yuchen was sent to the world of High School of the Dead. He, along with 100 people, have to travel through various worlds, fight and solve quests in order to survive.

Whoever dies in that world, would be teleported back to the real world without memories of what happened before and die in an accident one year later.

- Description from Novelupdates

This novel is also known as The World Is A Wasteland: I Obtained A Top Tier Shelter

The meteorite destroyed the world, and the global people traveled to the wasteland world!

The monstrous flood, the ice age, the advent of alien beasts, the plant plague…

Under the random disaster once every seven days, if you want to survive, you must build a higher-level shelter!

Lin Yue awakened the 100% treasure chest system, and since then he has opened up a completely different style of painting from others.

Others: “The explosion rate of the treasure chest is too low? I still haven’t killed fifty mutant creatures!”

Lin Yue: “There are too many boxes and there is no room in the inventory. Do I have to upgrade the shelter to build a warehouse? Oh, it’s so annoying.”

- Description from novelbuddy