But Korail and JR West have a joint rail pass () which includes discounted KTX and Shinkansen tickets with a Busan-Shimonoseki/Fukuoka ferry ticket.
This passage describes a joint rail pass offered by Korail and JR West that offers discounts on train tickets (KTX and Shinkansen) and a ferry ticket to travel between Busan and Shimonoseki or Fukuoka.