Kujibiki Tokushou: Musou Hāremu ken - Chapter 181

Xiao Yu, who was a student from modern Earth, accidentally transports to another world and becomes the lord of a territory. Facing an unfavorable situation, he vows to take back his family business, build his new territory, kill all of those who covet his wealth, and dominate the world!

- Description from Novelupdates

When I read the development of the heroine getting stolen away, I left a malicious comment to the author.

But then I woke up later, and I’m now the villain who is supposed to steal the heroine.

When the zombie apocalypse hits, high schooler Mira teams up with her snarky best friend Elliot and the mysterious, crowbar-wielding Alex. Armed with nothing but a broom (yes, a broom), Mira leads the ragtag crew through a zombie-infested town. Soon, their biggest battles aren’t just against the undead—they're against hunger, exhaustion, and the question of why they're even fighting in the first place.Rom-Com Zombie Apocalypse is a wild, funny, and a bit existential tale of friendship, survival, and finding meaning in a world gone mad.

Seven billion humans living on the Earth time-traveled together after they had woken up one morning. They all heard a synthesized female voice.