Underworld: It's a Showdown, I Have the Strongest Free System

After his death, Jiang Lin was forced into the underworld and found a system he never imagined. This system is very strange: "Congratulations on completing the dialogue mission and receiving the dragon-slaying sword, which costs 999!" "Because you hurt your opponent, the system will reward you with a billion dollars!" "You were punched. The system cannot let the protagonist suffer. Get the One-Punch Superman special effect!" "Because you took one breath, the system thinks it's great, and hereby rewards you with an Earth!" The king, who was trampled under Jiang Lin's feet, asked unwillingly: "What makes you, a black iron three, trample on me at will?" "It's a showdown. I have the strongest free-for-all system." This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.