Kicked Out in a Rainstorm, This Bank Regretted It (59 episodes)

On a torrential rainy day, an elderly couple dressed plainly walked into a bank to take shelter from the rain, but because they didn't look like clients, they were driven out of the lobby. Amid a hall full of onlookers, only one young security guard brought over two cups of warm water. The elderly man neither argued nor made a scene, remembering only the kindness. Yet no one knew that this very elder was the bank's biggest client. Instead of getting even, he spearheaded a major overhaul—turning the motto "Customer First" on the wall into a cup of warm water handed to everyone seeking shelter from the rain.

Kicked Out in a Rainstorm, This Bank Regretted It - Episode 1