The Black Beast’s Useless Concubine - Chapter 2517

I was reincarnated into another world, and I’ve brought the Horadric Cube from Diablo II with me.
Being a knight is cool and all, but being a wizard is pretty neat as well.
So, which one will it be?

- Description from Novelupdates

“Congratulations, you're now a Handler. You'll serve the state with utmost loyalty and pledge your life to its causes.”That was what Trent heard just before being handed an envelope—and a whole lot of disrespect.Mocked for his poor combat performance and labeled pathetic by his superiors, Trent finishes Handler training humiliated and underestimated. But they made one mistake: they judged him by his strength, not his mind.What Trent lacks in brute force, he makes up for with a rare genius in finance.So when a mysterious voice speaks to him in the bathroom—“Hello, Host. This is Ave-511e69.”His world flips upside down.Now equipped with Ave, a mysterious financial system that seems to know everything, Trent is about to rise through the ranks in a way no Handler ever has.Through stock markets, black-market missions, and calculated chaos, he will prove that money is the greatest weapon of all.They looked down on him. Now, they’ll look up in fear.

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

Intellectual Villages are old fashioned rural villages recreated with cutting edge technology. Those villages attract the Japanese monsters known as Youkai.

The high school boy Jinnai Shinobu lives in one of those villages and has a Zashiki Warashi living in his house. He tends to run across Youkai with unnerving frequency and this often leads to trouble for him.