$ sudo apt-get update
$ sudo apt-get install libhangul-data 

libhangul-data is installed in your system.

Make ensure the libhangul-data package were installed using the commands given below,

$ sudo dpkg-query -l | grep libhangul-data *

You will get with libhangul-data package name, version, architecture and description in a table

libhangul-data package basic information: