Demon King of the Royal Class - Chapter 120

After failing his college entrance exam, Li Yang had dropped out and started to support his first love. Yet after her graduation from university, she dumped him immediately.Now Li accidently takes other's chance to travel back to his high school years. With the exam answers remembered, Li decides to embark on a different path.

The world that nurtured the civilization which reached the pinnacle of magic was on the verge of destruction.
The last survivor transmigrated to the past, when the magic civilization started growing, as countless mages were still fumbling their ways through the thorny paths of magic knowledge.
He, who came from the end of the magic era, aim to reach the pinnacle of magic.

- Description from Novelupdates

An internet troll who wanted attention, the reader criticized his favorite web novel, saying: “The protagonist is dumb and the author is stupid.”

She is the Crown Prince’s fiancee, but on the night of their wedding, an edict was made and she was given off to marry the crippled and paralyzed God of War.