Korean Air is the only airline I can find with J award on all segments on the date I want. Of course, Singapore Airlines has a lot of J seats, but 100k though.

I was told that if I add Korean Air as my inbound return with another airline outbound to create a RT ticket, I will only be charged 60K instead of the 120k, thus I do not want to get 2 one way tickets.

I did that before quite a few years back but this time I would have to drop the KUL segment to get it, so I was confused.