The Emperor and the Knightess - Chapter 5

Perhaps it is the choice of fate. As a senior otaku, Qian Lingfeng got the “steel shell system”. However, when he swept the world with the system, became a local rich man, made all kinds of beautiful women, opened a harem, and realized the ultimate fantasy of thousands of otaku, he found that things seemed far from simple!
When the end comes, biochemical zombies suddenly come down, fierce beasts are in power, bloodthirsty zerg roam to kill the world, and human lives are comparable to dirt. Where will weak human beings go in this world? Is humanity going to be extinct? Or … can an otaku save the fate of the human race?

- Description from Novelupdates

Crying blood and tears, she pledged a poisonous vow. The gods did not fail her. She was sent back to a decade ago. The legitimate daughter of Jiang family returned from hell.

Yun Xiaoxiao was knocked unconscious by her phone and transmigrated into a female supporting character in a tumultuous era.The original character abandoned her family to return to the city and was accidentally killed by her abusive husband.With the Golden Finger shopping app in hand, Xiaoxiao could buy whatever she was lacking and raised her two kids plump and healthy.But when she wanted to divorce the male lead and live a wonderful life alone, the male lead was suddenly unwilling!Male lead: “Wife, I'll make sure you have a good life.”Da Bao: “Mom, I will honor you well.”Xiao Bao: “Mom, don't leave us, I can be cute.”The father and sons acted pitiful, just trying to keep her, who had crossed over.Back, back, back...You belong to the Main Female Character, not to me, the female supporting character.

Lingyun, a fierce and savage cultivation genius takes over a dead teenager’s body. Coincidentally, they are both named Lingyun. Set in a alternate version of the 21st century, teenager Lingyun has been killed by someone with a grudge.

- Description from Novelupdates