The Art of Pursuing: The Unyielding Ex-wife - Chapter 529: That will probably take at least three years

In a world ruled by ten royal families, Saruto was born into the Lewin family (the Dark family). He grew up carrying a promise he made to himself with his mother's last breath: to become the pride of the Lewin family (the Dark family). He is compelled to acquire power to help him achieve his goal. In his quest for power, he begins to uncover the origin of the Dark Power that suddenly appeared in his world without warning. He realizes that his family's history is deeper than he thought. How will he discover his family's history, and will he be able to fulfill his promise to his mother to become the pride of the Lewin family (the Dark family)?

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.

“I wasn’t born a lucky person, I’m just too strong.”

On his way home late in the evening, Xiao Li found a letter asking for help and inexplicably came to an unknown place. He had to finish the task given before he could succeed in returning to reality. In the legendary haunted school, Xiao Li looked at his companions’ task of ‘survive until dawn’ and then looked at the tasks displayed in his book:

Tell me your name.

Tell me what you like.

Kiss me.

Xiao Li: ????

He was very confused and then refused.

- Description from Novelupdates

When a person dies, they either die light as a feather (aka unimportant) or heavy as Mt. Tai (aka very important).