Have you noticed, that Okinawa – the Japanese beach paradise is just a stone’s throw away from South-Korea? And you can reach it within less than 2,5h flight. It almost as close as Busan, isn’t it? 😉.
To be honest, recently it’s not really enjoyable in Seoul. It’s too cold, windy and the air quality is so bad 😔. How about escape to a warmer place? Vietnam, Philippines, Thailand, etc. are quite close to Korea, aren’t they? Let’s consider Cebu, a tropical island of the Philippines.