Maybe a Fake Gintama - Chapter 5: [Monster] and [Little Monster] and [Son of Monster]

Liu Ling, an unmarried activist, has been unrestrained all her life. Before her death, a friend asked her if she had an unfulfilled wish, and Liu Ling replied she could not raise a baby.

The friend fell into trouble; this is not easy to do. Not waiting for her friend to speak, Liu Ling said that if she gave birth to a child, the mother would die, and her child would live, so let’s forget it.

Unfortunately, God heard.

After her death, she did not enter the underworld and transmigrated into Song Zhaodi. She also had seven children, all of whom were not her own.

- Description from Novelupdates

After everything that Zaroth had was stolen from him, he decided to live solely for his desires, morals be damned!Close to his death, he resurrects and tames a mythical dragon, who turns out to be a breathtaking woman.Learning that in order to explore her body, he must grow stronger so he doesn’t die during the act, Zaroth sets a clear goal for himself: to get stronger.“But I’m curious about something.”“Hm? What is it?” Luna asked, raising an eyebrow.“You said you judged me. How did you do that? Why was I worthy?”Luna’s smile darkened, her eyes glowing with a dangerous intensity.“Despite knowing you would die, you didn’t pray to the gods. On the contrary, you declared that you would kill every single one of them like the dogs they are. In my life, you’re the only one who’s ever made such a declaration, which is why I couldn’t leave you behind—someone who dares to share my dream.”

A 30-year-old NEET is reincarnated into the body of an otaku that choked to death on instant noodles. As he comes to grips with his new life, he realizes that this world is subtly different from Earth. The denizens of this world are far better looking, and this new world also possesses futuristic technology as well as mysterious Yin Yang masters!

Hiding in the Cold Palace and eventually becoming a Boss of Sorts. Li Mu was transported to a fantastical world and became a measly eunuch of the State of Xia. Despite having initially thought that his life would be a miserable one, he had unexpectedly acquired a check-in system.