The Grandmaster Strategist - Volume 1, Chapter 4: Appreciating Art, Overturning Injustice

Liu Jun traversed into a future world and was not able to afford an auxiliary Intelligent Brain. Just when he was mocked by his classmates, he accidentally acquired the gift of fungus evolution, transforming into the Fungus Lord, possessing a Mushroom Soup World.[Welcome to Fungus Planet][Life is but a soup of 70% water fungi cells, your task is to bring plague, disease, and despair to the filthy world, fighting against humanity.]

A polite and lethargic boy was reincarnated in another world as a vampire bishoujo.

Ding Ning was just an ordinary youngster from a small border town in southwest China, but he had learned tremendous medical skills from his masters since his childhood. After graduating from college, he stayed in Ninghai City and tried to seek a job in a hospital there, but things did not go well at first. However, he accidentally saved Shen Muqing who was from a rich and powerful family, and then got involved in the confrontation between Ninghai special police team and a mysterious organization called Vampire Mercenary Group in order to protect Ling Yun who was his landlord’s daughter. It became the turning point of his life. After that, he started an incredible adventure during which he would find out the real identities of his father and masters and discover the secrets behind the mysterious organization Vampire Mercenary Group and the special weapons and tactics team Dragon Soul…
The story tells about how he opened nine apertures, fought with rogues, chased after various pretty girls and established a rich and powerful family by himself. He climbed up to the peak of his life step by step, and finally became medical sovereign.

- Description from Novelupdates

She killed his wife, destroyed his reputation, and ran off with his son. 8 years later, she returned home with her genius son, who already had a fiancée. “Give me the child, or you can’t afford the price.”“A girl who eats meat and vegetables doesn’t suffer, if you want a child, find yourself a woman to give you one.”