Given a travel related situation, and given a specific question about the situation, summarize the question into a title
Q: I realise that return tickets are sometimes required for tourist or visitor visas (i.e. Korea has 90 days free for Australians like me)

Just wondering that if I ever plan on entering Korea on a one-way ticket, is it even possible? I will fly to Japan sometime within the 90 days but I'm not sure when.

A:
Catch a one-way ticket to Korea