Demi-human Girls Completion Manual - Chapter 4 - . Three Rules

Xu Mo loved playing games on Steam and bought a ton of them. But he soon realized something strange—whatever happened in the game started affecting his real life!When he played as an AI girl, a gorgeous girlfriend appeared in the real world. After robbing a bank in GTA, millions of dollars showed up in his real bank account.One time, while exploring a fantasy game, a Taoist monk with incredible powers showed up in reality, cutting an aircraft carrier in half with a sword and talking to him about Taoism.Things quickly spiraled out of control, throwing the whole world into chaos!

After dying in the world of One Piece, he was reincarnated once again this time as Neji Hyuga. But fate was no kinder here. With his father dead and the cursed Caged Bird Seal looming over him, for his survival he made a ruthless decision....

The whole world is subjected to a highly dangerous standardised exam called the Global University Entrance Examination. Answering questions by putting their lives at stake, they would live if they passed the test. Every month the exam will undergo reformation while, occasionally, it is random.

- Description from Novelupdates

Mo Yan was an illegitimate child of a rich family and was arranged by her mother to take the place of her sister in marriage to a poor man in order to fulfill the marriage contract set by the previous generation, allowing the Mo family to get their hands on that substantial dowry.