I Stream DC on Marvel - Chapter 169: The "harem" causes extreme jealousy in everyone and the teacher is interested in her student.

Han Ze’s biggest wish in his life is to have a child. However, in the interstellar era with low fertility value, this wish is very slim, and his life has not been realized at the end of his life.
After his death, due to his obsession, he was bound by the almighty dad system, traveling through different planes to be a father to those children who were in urgent need of help.

Patriarchal Dad (Completed)
Upstart Cheating Dad (Completed)
Abuse Dad (Completed)
Playful Daddy (Completed)
The Last God the Father (Completed)
Father and Father (Completed)
Sick Daddy (Completed)
The troubles of Lord Han (Completed)
……

Content Labels: Ability System Fast Passing Through Books
Search keywords: protagonist: Han Ze ┃ supporting role: many ┃ others:

- Description from novelbuddy

Su Ran, a music prodigy, woke up transmigrated into a book.

At that point in time, the main story arc in the book had already been completed. As a villainess female supporting character, not only did she need to take over the original owner’s pitiful life in poverty, she also gained an instant son right at his rebellious period.

Ten or so more years from then, the son would turn into a twisted, evil villain. He would appear in one of the extra chapters to pick on the male and female lead’s children.

***

Su Ran: Son, you shouldn’t be too outstanding.
Su Han: Why not?
Su Ran: ’cause you will be killed.

Su Ran: Son, would you like to learn music from me and become a zen, little fairy boy who only needs to drink dew.
Su Han: No, I want to go into business so I can support you.

- Description from Novelupdates

Xiao Jinghuai's home has a little thing, soft and adorable, lively and mischievous.Rather than calling her a wife, it would be better to say it's like having another daughter.Some people say: “Young Master Xiao pampers his wife to the point where she only needs to open her mouth to be fed, she's almost become useless!”“Whoever says that, throw them into the sea to feed the sharks!”Another person says: “Young Master Xiao's wife really doesn’t look that great, nowhere near as beautiful as so-and-so!”“Whoever says that, gouge out their eyes to feed the dogs!”Yet another says: “Young Master Xiao spoils his wife excessively, he has become a tyrant of his generation!”“Who says so?”Turning around, just to see the girl's bright and charming little face, “I said it! So what do you want?”He pulled her into his arms, didn't want anything, just wanted her to be his little princess...(Even in this world full of charms, I only have eyes for you.)

She went out of the way to help him build a business empire and get his inheritance. When she thought they would live happily ever after, she and her entire family were quietly gotten rid of and burned to ashes. As the blaze seared her skin, she was overcome by deep hatred and bitter regret, and wished she had another chance…

Dizziness jolted her out of unconsciousness.

She is now known as Miss Su. She tried to run from her wedding, but slipped and fell in the river, which incidentally, brought great shame upon both her and her fiance’s family. The word on the street is that her fiance is a playboy, a make-out king, and a bit of a lady’s man. But she has to salvage this marriage to carry out her revenge plan.

And… the more she gets to know her future husband, the more she needs to find out. He turns out to be much deeper and more sophisticated than he cares to show to the outside world.

- Description from Novelupdates