Time to revive this thread again.
Going to be visiting Busan and Seoul in November if anyone knows anywhere to check out, or wants to head out for a session. Been looking into shops and shit but it doesn't seem like too much is going on in Busan apart from longboarding
In Busan go to the Busan Cinema Center in the Centum City Area. There's a few huge steep banks that are fun and actual walls of the building itself, and one angled bank that has a lip. There's a manual pad with a huge statue on it. The ground is smooth and has a satisfying echo as you skate flat, but you're right its infested with long boarders. So there's two other skatespots on both sides of the Cinema center, if you go directly towards the river across the street theres a half circle stage thats a pretty tall manual pad, with some ledges, and actual skaters session there in the late evening. The other way across the street have roller coaster ride on ledges that are pretty hard to skate. I spent a lot of time skating these spots alone in extreme humidity and walking home uphill completely soaked.
There are hills around Busan, but be careful there's wild drivers there that won't understand what they're seeing if they see a skater.
If you wanna go to a skate spot with a higher density of skaters go to Sajik stadium, theres ledges/boxes there.