I am on my way to Busan by KTX.

I am waiting for KTX to Busan.

I am on my way to my relative's funeral.

The train will arrive on time without delay.

Now the train has departed. I hope the train will arrive safely to Busan.

to Busan 부산행

on my way to  ~에 가는 길

relative  친척

funeral  장례식

on time  정각에

without delay 연착없이

has departed  출발하다

safely  안전하게