"Fred, I'll help you to the best of my abilities."

"Thanks but why won't you really help me?"

"You met a girl and fell into debt. I can't help you."

"It's fine. I know you will help me."

Dave remembered this conversation. It's been ten years since he last saw Fred. The two of them are playing mahjong together with two girls. One of them, Dave recognizes as the girl that Fred met.

"Hello, Dave. It's been so long."

"Fred, you ... what are you doing? You already paid your debt back. So, why are you here?"

"I can't help it, Dave. I lost to my desires. I needed to play again. If I win, I'll pay back my debt again."

"Fred, ..." said the girl that Dave recognizes.

"Sorry, Mini ... Dave, I need you to lose. We're friends."

"Ahem," the other girl cleared her throat. "Let's start. By the way, my name is Vicky and I am one of the Darks. All you need to know is that I'm strong."

One by one, tiles are placed on the table.

Vicky is winning so far, followed by Dave, Fred, and Mini.

"No, this can't be." Mini let out a cry.

"It's ok, Mini. I'm here for you." Fred said reassuring her.

Suddenly, 

"Ron," came from Dave.

"Impossible." shouted Vicky.

Dave won the game, and everybody else lost.

"You, Dave, who are you." Vicky is shocked. She should have been the winner.

"I'm one of the Lights. Good bye Fred. We are no longer friends."

"What's a light?" asked Fred.

Mini answered, "The Darks and the Lights are people that have won a lot of games. The strongest have a choice to continue living in the underground and play dark games. Or live in the light, and stop gambling.

Dave walks out of the door. But is stopped by Vicky's friend. 

"Come on, let's play some more." 

"Yes, let's play we have enough players."

Dave denied them, "No, I'm leaving."

"Leave him be," said Vicky. "You can leave, but don't you care about your friend."

"Dave!" Fred shouted.

"I'm sorry, Fred."

Dave walked out of the door, and never saw Fred again.