Underground Society: Mafia

Prologue:

After the fifth, here comes the sixth

Checking one by one, who's on the list

Thinking about who will come first

Before the comeback of the monsters

- sixth

Series #1
Underground Society: Gangsters

Series #2
Underground Society: Killers

Series #3
Underground Society: Hunters

Series #4
Underground Society: Assassins

Series #5
Underground Society: Reapers

Series #6
Underground Society: Mafia

Series #7
Underground Society: Clash