A skilled thief gets a system in an Alternate Wizarding World. The system seems useless in the beginning since he hasn't unlocked any features. But...
[The very first feature of the System has been unlocked.]
[Congratulations. You've unlocked the class feature. Due to your existing skills and experience, you have gained the Special Class \

(Naruto World)
In the 56th year of the Konoha calendar, Akatsuki added two more members, one of whom was named Uchiha Itachi and the other named Uehara Naraku.
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(One Piece World)
That year, the Baroque Work recruited new employees, and the president, Warlord Crocodile, held a smoking pipe and looked at some resumes with satisfaction. One of the resumes was a young man smiling very kindly. He called Uehara Naraku.
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(Overlord World)
The Great Tomb of Nazarick.
The Ainz Ooal Gown guild members gather here, and they will carry out the last guild activity before the game closing service. Momonga looked at his friend and said in a deep voice, \

In the ancient centuries of the yonder past, the heavens and the earth was rent, and in Long Ji Continent a tribe of dragons ruled supreme. But now, the dragons are extinct, and with a mysterious catastrophe descending, the fate of the world is at stake!
A teenager named Long Chen takes on the legacy of his father, chases after the mystery behind the sudden extinction of the dragons. In a lucky coincidence, he becomes the first ancient dragon warrior in an eon, with the responsibility to uphold the dragon tribe's honor and the command of all dragons under heaven.
With the most passionate battles, heart-moving tender scenes, brutal slaughters, and filled with the majesty of dragons. On the advent of the catastrophe, millions upon millions of dragons descend upon the world again, bringing the world to the brink of an era of war.
For he of the ancient dragon tribe, is willing to paint the sky with blood, if only for the bonds of brotherhood; with a wave of the hand to reverse the flow of the galaxy, for a goddess worthy of praise; will pull the gods down from their celestial pedestal, sunder the heavens, for the good of all living things under the sky!