CEO Above, Me Below - Chapter 12

After time-traveling, Su Yunjin thought she had married a lame brutish fellow. As it turned out, not only could the hunter husband do business and hold office, but his leg wasn't lame either.“Wife, take a seat, I'll make the money.”“And what about me?” Su Yunjin raised an eyebrow.The man chuckled lowly and pulled out two cute little buns next to him. On each side, the adorable buns clung to Su Yunjin's thighs, “Mommy, we want a little sister!”

Cao Xin, a young man on earth, died in a car accident, traveled to a troubled world where supplies were scarce, and obtained a “Bronze Immortal Gate”…

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- Description from novelbuddy

Ten years ago, mana descended upon Earth in the form of Gates that opened into other worlds. These Gates contained Magical Beasts of unfathomable strength and power that preyed upon humans and sought the destruction of everything around them.But along with the Gates, humans gained the power of Gifts—super abilities that allowed them to fight back against the monsters and take back their world.Now, the Superhumans with Gifts are tasked with defending the people and ensuring that the Gates, which open all over the world, do not bring about the end of them all....Jason Marc was just your regular seventeen-year-old high school student whose father abandoned him ten years ago. He worked two part-time jobs while also helping his mom with her diner to aid with the finances, but he could have never guessed that his entire world would change on the eve of his eighteenth birthday.Now, with more power than any one man should possess and an army at his beck and call, Jason works toward protecting those close to him while finding out the truth behind the emergence of the Gates—and preventing the end of the world.

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