The supporting character's harem is very normal - Chapter 14: Elemental Stone

She is one of the best thieves that the world has seen in the 24th century. However, not even in her wildest dreams had she imagine that she’d be reincarnated as a good-for-nothing orphaned Seventh Miss of the Vermilion Bird Family. She finds herself stuck in a family that mistreats her, as well as an unfamiliar place with no support system.

She found that her fiance was sick and squeamish, but it was a little expensive to raise.
The poor and poor high-level bosses have to make money to support their husbands while accumulating merits.
Then, he went to the construction site to move bricks and was caught by his husband. He set up a stall at the door to tell fortunes and was carried back by his husband. He went out to catch demons and was carried back by his husband.
The big devil is very distressed, what should my husband do if he always wants to keep her at home?
Yu Chao is rich and Huaizhi is helpless, what should the little girl always like to go to dangerous places?

- Description from novelbuddy

It was just a normal morning but it was unknown to many that the apocalypse already started.

The origin was not determined but the infected started to appear after a cosmic event happened just outside of the Earth’s atmosphere.

The people and animals turned into man-eating mutants and zombies while some of the lucky ones gained superhuman abilities. Every living creature that had not “turned” started to evolve as the whole world was affected by the Mutagen.

However, it seemed that Earth also had its hidden side that humans would discover in a very uncanny way.

And was Mutagen the last of it?

Unfortunately, not.

Follow Mark, an Otaku, a Gamer, and a Shut-in that got trapped in the middle of the apocalypse due to an uncanny reason. Using his unconventional thinking, knowledge, and abilities, how far can he go in surviving the apocalypse filled with zombies, mutated beings, and dangerous people as a survivor in a world that was changing for the worse.