Comment 40 for bug 1581160

@Seong-ho Cho: I fear that we haven't been clear enough about the meaning of "default".

The default font packages for Korean are those packages which are installed automatically when you

1. install Ubuntu and select Korean as the language, or

2. install the Korean language afterwards from Settings.

The goal is to provide a good font, decently configured, so an unexperienced user shouldn't need to bother about it. Up to 17.10 those packages have been:

fonts-nanum
fonts-nanum-coding
fonts-unfonts-core

In 18.04 they will (probably) be replaced by:

fonts-noto-cjk
fonts-noto-cjk-extra

Please note that there is no plan to delete Korean font packages from the Ubuntu archive. In 18.04 power users will have the option to manually install one or more of the previous default font packages and change the configuration to their liking.

Hopefully that explanation addresses your concerns.