Kyoukai Senjou no Horizon - Volume 1, Chapter 07: Philosophers Atop the Stairs

He became a teacher at the best magic academy in the empire.
….For being mistaken for someone else.

Lin Jiufeng transmigrates to become the Yuhua God Dynasty’s Crown Prince but is dethroned, banished to the Cold Palace, and imprisoned there because he had released the holy maiden of their rival country.

Lin Jiufeng isn’t dejected. He has brought a sign-in system with him when he transmigrated and he would receive rewards when he signs in at different places.

Before the Cold Palace’s gates, he signs in and receives the Ultimate Heaven Slashing Sword Skill!

In the Great Council Hall, he signs in and receives the Heaven Patching Technique!

In the Empress Dowager’s palace, he signs in and receives the God of War Totem!

…

Liu Jiufeng imagines that he can quietly sign in like this until he becomes invincible. Yet who would have imagined that the Heavenly Concubine whom he secretly released would rise in rebellion and seize power after she returns to her country?

After she succeeds, her first priority is to attack the Yuhua God Dynasty to rescue Lin Jiufeng.

When Liu Jiufeng hears of this news, he’s puzzled. «Do I need you to rescue me?»

“There are always people who want to be evil!”

“The end of the world is coming soon, I must survive!”

Shen Cong, a patient of paranoia, saw other people’s opinions on the Internet about the end of the world in 2022, and immediately believed.

After which, He didn’t go out of his home, stayed and built his own doomsday vehicle, honed his ability to survive. Until one day, Doomsday actually came.

- Description from Novelupdates

A conspiracy had brought her back from the countryside to replace his sister and marry the mysterious and eccentric Crown Prince.

As a tough girl She expressionlessly stretched her muscles and planning to block whatever came her way.

If that so called Crown Prince dared to touch her, she would definitely hit his head to the ground!

However, the strange crown prince seemed to have some misunderstood about her...

“My wife is obedient and sweet. Don’t scare her. ”

“My wife will have her final exams tomorrow. I need to go back early to tutor her. ”

“My wife is not knowledgeable and has a bad temper. But with me around, you have to indulge her. ”

In the upper class of S City, they received a warning from the young master of the Bo Family almost overnight: Madam Bo is a treasure. Whoever touches her will have their hands cut off!