Seoul has no storage as pretty much every other city in the game.

Seoul does not allow you to open guild storage, as does every other city and town.

What happened?  It just wasn't worth the effort to at least make it comparable to the other cities and towns in that respect?

soon, they have this node thing remember?

basic features to be dribbled out at a later date as "content" updates.

Seoul also doesn't have daily quests available. There is very little to do there overall. Here's hoping this gets fixed sooner rather than later.