Chung Sang-hoon comforts his son as his daughter plays with toys at their apartment in Seoul, South Korea, December 14, 2015. [Photo/Agencies]

SEOUL - It's a weekday morning and Chung Sang-hoon, 34, is at home with his two small children, classical music playing in the background.

Fathers like Chung, who has taken a year of paternity leave from his job in sales with a big foreign company, were once so rare in male-dominated South Korea that they are called "superdads". But their ranks are growing.

"Everything is definitely worth it, from preparing breakfast for the kids to doing the dishes, because I can live for the sake of values I find important," said Chung, whose wife is a teacher.

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