Transmigrating from a zombie world to become the mecha kings wife - Chapter 10: Her explanation

Riku Barusak is a hard-working child. Despite possessing an innate superior physical strength and having withstood harsh training she fails to unlock her talent as a spiritualist. The failure results in her being thrown away by her family.

Abandoned, the only ones that extended a hand to her were the demons, the greatest enemies of the human race. Serving under them as a soldier she becomes a weapon of human slaughter, a fiend that should never have existed.

As a promise, he went out into the world as an assassin. 3 years later, after becoming the Supreme Assassin, he gave up on everything he had and returned to the ranks of ordinary people. But one day, Kismet, a mystical game created by the National Research and Development had appeared.

One day, Luo Jian woke up from his sleep and found himself in a locked chamber where the door and window were all sealed. A note with a few lines written on it was tacked to the wall: “Escape from this room within an hour, otherwise, you will die.”

There is a sequel called Reincarnation Night (轮回之夜) that takes place in the same universe but has different main characters

- Description from Novelupdates

One day, the whole world gamified in the eyes of Su Mo.Not only could he use his lifespan to draw cards, but he could also see the hidden attributes of every item in life.As such, when he looked at the hanging lamp above him, he saw:[Item: An old hanging lamp][Hint: It will drop after one minute and seven seconds.]When he looked at his right arm, he saw:[Item: The right arm of a young man][Hint: The grip strength of his right arm is 3% stronger than that of his left arm due to continuous training.]When he looked at the ginseng on the table, he saw:[Item: A stalk of wild ginseng][Hint: It is tinted with a layer of source power. Consuming it could make you feel energized.]…Excited, Su Mo rushed to meet his girlfriend, who was a school beauty and had just agreed to date him.He then saw a bright red HP bar on top of her head.[Item: A very thirsty fox demon][Hint: You might not be able to put up a fight against her.]