Remember that most of the time, when it comes to Jima and the Silver Moon Syndicate, The House Always Wins... well. Enter young Fuku, a man of marvel with cards, dice, lee-rets, bluffing, blinding, and bidding. One night, he won so much that he earned the eternal ire of one of the underbosses, Deikuo. Deikuo was convinced that Fuku was somehow cheating but could not work out how. All he knew was that Fuku played large and loud, leaving the table just before his luck would surely turn for the worse. He even sent several of his thugs after Fuku, but strangely enough, they all suffered extremely "unlucky" accidents.
Determined to make Fuku lose, Deikuo used a considerable portion of his wealth to offer to the Rakki to make Fuku lose on a costly hand of cards. It's said that this is how the Rakki got that slight smile on the side of his mouth because Fuku won the hand, costing not only the players but Deikuo himself all they possessed. You can't bet against luck, it seems. After winning, even more, he drew the unwanted attention of the Oyabun of the Golden Dawn, who made him an offer he could simply not refuse; you can't play games of chance when you're dead, so he now works for the Silvermoon Trade Synidicate, because as anyone knows, those who the Golden Rakki will not, or cannot, interfere with are valuable.
Like many models in the Silvermoon Trade Syndicate, Fuku is not taken for his overt combat ability. Instead, his collection of luck-altering abilities fits in well with the Silvermoon's existing re-roll mechanics. Gamblers' Ruin can cause even the most skilled model to simply have an unlucky roll, and Misfortune can cause glancing blows to turn into fatal hits.