Three years ago a famous game was released named "Ruins". The gameplay of this game is mainly to overcome dungeons and try to win. But the difference here is that this game is very competitive and that if the character in the game dies, the user's account will become useless and cannot be used anymore. That's why this game has attracted a large number of players around the world, including you, a player in the top 6 worldwide.

However, one day, when you opened this game to play, a strange feeling appeared and when you woke up, you found yourself in this game. You quickly grasp the situation and try to adapt here. But suddenly you hear the sound of using magic from an extremely powerful hidden Boss that you haven't completed yet. The notification suddenly appeared: The hidden boss has detected the player A chill runs down your spine and suddenly the memories and skills of the character you entered in the game begin to rush into your head. That helped you regain your spirit to fight that "hidden Boss". After a while of struggling and watching death a few times, you have defeated that "hidden Boss". That thing started speaking:

"What...? How...? How could a filthy mortal like you defeat me... no way..."

The system sound rings again: Now you have two options: 1: Kill the "Hidden Boss" to escape the dungeon and get valuable items. 2: Make a contract and turn the Boss into an absolutely loyal slave.