Magic Sect of Beauties: The Strongest Mage is in a Cultivation World - Chapter 31: Of Potions and Pride.

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

Those people killed her grandmother, murdered her younger brother, trampled the people she deeply cared about, and even took her own life.

It was because she trusted her ambitious stepmother and half-sister;

because she mistakenly believed that womanly virtue is to have no talent;

because of her noble status and origin….This is what caused her death.

Buried in river water, Ouyang Nuan, gritted her teeth and spoke, “I, Ouyang Nuan was wronged in death. Even if it takes forever, I will become a devil, and in the next life, will not let you off!”

When she once again opened her eyes, Ouyang Nuan was sent back in time to when she was twelve years old. Around this age, her forehead was scarred, her brother fell into the water, and in three years she will be married…

In this life, she will try to change everything to guard and protect those she cares for from those with treacherous intentions. She will live a glorious life!

- Description from Novelupdates

After a year of relentless effort, Alex becomes the first to conquer a tutorial quest deemed impossible by the entire playerbase of Endless Leveling Online. But instead of loot or leaderboard fame, he earns something far stranger—an invitation from the God of Games.His prize? A one-way trip to Arcana, a living, breathing world where stories shape reality—and a chance to become the Protagonist of his own story.In a land of endless possibilities and ever-shifting destinies, Alex would try to bend the rules, rewrite fates, and forge his own legend. But being the Protagonist means more than glory.It carries a heavy responsibility.As secrets unravel and alliances are tested, Alex must decide whom he must protect, and save before the world collapses under the weight of its own story.