Rakuten Viki is doubling down on Korean thrillers, with two new series set to debut on the platform in March across North and South America, Europe, and Oceania. Corporate greed, political graft, and showbiz sleaze collide in “Climax,” a Viki Original in which Ju Ji-hoon (“The Trauma Code: Heroes on Call,” “Kingdom”) plays Bang Tae-seop, a prosecutor who weaponizes his position in a ruthless bid for power. The series takes a “Succession”-style scalpel to Korea’s elite, centering on a couple