Rebirth in the Apocalypse: Third Time's a Charm - Chapter 39

When she woke up, Lake returned to the classroom of the third year. The classmates were in class with swords and sticks, and the teacher became a female Taoist.
The little fat man in the back seat, how to put two big hammers under his chair.
Rick found this to be a global era!

- Description from Uukanshu (translated)

The orphan Sun Chan was abandoned by her first love. Her foster mother and sister sold her to the village drunkard, where she endured endless torment and ultimately died from exhaustion in the cornfield. After awakening, she returned to being seventeen years old. She vowed to leave the village this life and carve out a new world for herself! Family, friendship, and love, she will strive for them all. Hey, soldier brother over there, why do you keep looking at me?

Another entry in what you can call the Proto Harem Series: the books written before the Harem Series that take place in the same world.

It’s about a swordswoman whose student is captured, so she goes to rescue her.

The world was destroyed, the apocalypse descended, a new era began, and the right to survive as a Lord was granted to every person.Domains, Heroes, Troops, Treasures, Resources—all of the countless servers constructed by the myriad continents were opened up.Qin Muye looked at his panel, which was akin to cannon fodder, and his domain with its damaged suffix, and felt a strong urge to cry but no tears would come.No divine talent, no hidden hints, no overpowered Profession.“If that's the case, then I'll just have to adapt and live in a different way.”