MTL - The Devil’s Cage - Chapter 1789 missing one

As he woke up, Wei Xuan realized he returned to the day when the apocalypse had just begun. Wei Xuan, who had a second chance at life, immediately decided: not to go to a survivor base, and not to return to human society, instead, there is only one thing he wants to do now. Find the half-zombie Du Hang, and live with him in the city full of zombies, farming and living together until old age. Wei Xuan, who stayed in the zombie city after being reborn, unexpectedly found out that zombies are not as terrible as humans think…

- Description from Novelupdates

A young boy genius, Suo Jia, is a water mage who dreams of being a warrior travelling the great and dangerous trade routes to find his lost father that set off on them before Suo Jia was born. Having to look after his sick mother, Suo Jia manages to find a way to solve all their problems, as well as make a name for himself. He gathers nobility, vast wealth, items of great power, knowledge lost to the ages, and exceptionally talented females around him as he plots and plans – preparing to set off on an epic journey that will go down in history as a new legend. However, will others that depend on his powers so much be willing to let him go on such a dangerous journey so easily?

- Description from Novelupdates

I couldn’t even clear the 2D version, now to clear the game in reality?Maybe I’ll have to live here for the rest of my life.Well, even that won’t be easy.– A player found himself in the game, Dungeon and Stone, as a savage barbarian.To keep his secret, he must become the mask – must make himself be seen as more savage, more fearless than any others – a paragon of his race in the eyes of the whole world.Back on earth, in the empty darkened room, the quiet computer again began to whir. Text began to appear on the black screen.「Synchronization complete. 」

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