Sword Art Online - Vol 5 Chapter 4

Liu Duo was a young girl whose grandmother sold her to four brothers with the intent to be a bride. Unwilling, she ran away the following night, only to fall unconscious while trying to get away. Unexpectedly, however, she was reborn with the spirit of a 25 year old woman, also named Liu Duo.

- Description from Novelupdates

A strange event happened in Blue Star, a large number of Blue Star people were affected by a mysterious force, and their souls temporarily traveled to another world.

It’s a dark, weird world

Not only are the prices extremely high, but there are also many evil spirits quietly appearing. At the same time, various forces are fighting each other, and the people of the lower classes are suffering.

Yang Fangben, the attending physician of the mental hospital, also traveled through a strange incident.

Fortunately, he found that he had awakened a proficiency panel.

As long as you keep refreshing your proficiency, you can improve your own realm.

He grew up secretly, with corpses piled up under his feet, and he unknowingly embarked on a path of sagehood.

- Description from novelbuddy

Zhou Yun transmigrated to a fantasy world and was bound to the God Tier Epiphany System. He could enter into a state of meditation and achieve epiphanies that others desired regardless of what he did.

Other cultivators immersed themselves fully in hardcore training in order to achieve some improvements in their swordsmanship.

On the other hand, Zhou Yun achieved enlightenment in swordsmanship by merely picking up a sword and playing with it a little. His swordsmanship attained perfection in an instant.

Other cultivators trained hard in order to break through to the next plane.

Zhou Yun merely swept a glance at the fallen leaves in the courtyard. Then, he had an epiphany and broke through to the next plane on the spot. He had insights into everything in the world, and his rate of plane progression skyrocketed.

When other cultivators finally became powerful existences after going through various hardships, Zhou Yun had already become the supreme existence through having countless epiphanies.

He—an enigmatic and cold-blooded soldier with a mysterious background.
She—a ruthless and bloodthirsty spy.