One Word Changed, Characters in Chaos - Chapter 223 - 200 Regret

Have you ever thought that the state of the world as it presently is, could revert to the laws of the ancients? When a series of strange incidents beginning with the disappearance of his friend led Luo Yuan to question the possibility of an apocalypse, he becomes embroiled in the midst of a global-scale chaos.

Evolution has turned the flora and fauna of the vast and bountiful Earth into something that had never been seen before. Coincidentally, the all-dominating Homo sapiens have ended up at the bottom of the food chain. From mystery to crisis, will Luo Yuan discover a means of saving humanity by racing to the top of the food chain? Or will he strive in accordance with the law of the jungle? It is the dawn of an age of the survival of the fittest.

- Description from Novelupdates

“Please, I implore you to save the world.” This is what a goddess in white says to me in a pure-white space. Such is the standard line that suggests the game is about to begin. Please say this stirring line to boys and girls with sparkling eyes! It’s wrong to direct it to someone like me, who’s exhausted from job hunting! When I declined her politely, she flew into a fit of tears; when I agreed to assist her on small tasks out of reflex, she proclaimed: “it’ll be fine if you just help in the Starting-Village Arc. Please guide the Hero!” Then she tossed me into another world. No, this is a world modeled after a game that this gamer goddess likes…

Uzumaki Naruto wakes up one day to find out that his life has been turned into a RPG game, thanks to his 'Gamer' ability. What should he do about this? Smart(er) Naruto. Elements of Romance Games included in later chapters, so possible upgrade to M later

Yin Yin is the new bedside mother-in-law who specializes in protecting the safe and healthy growth of children in the world. However, she found that more and more parents do not pay attention to their children’s growth, which leads to the original innocence and cuteness A child’s life is miserable.

Yin Yin decided to go down to earth to become the mother of the children and protect the happy lives of those poor children.

World (updated in no order):

1: A patriarchal mother

2: The queen mother who gave birth to a child in hidden marriage

3: Mothers of left-behind children

4: Single mothers of divorced children

5: The mother of a child with autism

6: The mother of a disabled child

7: “For You” Strong Mom

8: The eccentric mother who abused her adopted child

9: The real and fake daughter of a peasant mother

10: Second child mother

11: The Queen Mother of the Nine Sons

12: The gold-worshiping mother who holds the upper hand

13: Superstitious illiterate mother

14: Stepmother whose mother became a stepmother

15: The poor mother who abandoned her husband and child

16: The Fallen Wealthy Mother

17: Abducted college mother

18: Divorced mother of blind child

19: The loving mother who lacks love for the little father-in-law

20: To be added

- Description from novelbuddy