KSK's life took several turns since he quitted game center business. He now works as show promoter and entertainer for an entertainment production company. The Great Sasuke is in the same company.
By looking at whom he works with, people (jokingly) accuse him for being a part of yakuza organization. It can't be helped, especially since his boss looks shady and is very rich. Just look at the money he brought with when they're going for a late dinner. (He did that just for fun.)