Watch till the end of the end credits - definitely there is a setup for season 2. The guy who is the water guy will investigate into PPF chairman's son who is one of the directors which Sanin owes trillions too.
Wait that guy in that picture on the wall is the chairman's son?!
yes but the crazy thing is he is also the top guy? in finance company that Sanin owes trillions to which they can call in if they want. Also another possibility- is it the son-in law instead?