South Korea’s first internet-only banking firm K bank will seek to offer the best interest rates for both deposits and loans among first-tier commercial lenders in the country, leveraging its advantage of zero costs in running brick-and-mortar branches, its CEO said. At its headquarters in Gwanghwamun in central Seoul, K bank’s some 200 employees are busy making sure all its financial transaction systems and the user interface of K bank’s smartphone app does not have any glitches, prior to the official launch of its services in early or mid-March.