In a ritzy area of Seoul, a trend has risen where all-night bars are open purely to cater for women.

They’re called Host Bars, and they provide a place where women go and spend - sometimes - thousands of dollars for male company. It’s a booming business in South Korea and Japan with hundreds of places just in the wealthier Gangnam district of Seoul.

The men wear shiny suits and have every strand of hair perfectly in place. The host bars are part of a growing industry that came…