Japan Transportation Tips by K1W1

The 'J.R.' pass

There are several rail passes available now, but the J.R. pass seems to be the most comprehensive.
7 days cost 28,300 Yen
14 days cost 45,100 and
21 days cost 57,500 Yen

or for the superior class 'green' cars, 37,800, 61,200 and 79,600 respectively.

Ticket vouchers must be purchased before arriving in Japan, These are then exchanged for the JR pass when in Japan..

Mode: AROUND

Type: Train

Overnight ferry across the Sea of Japan

The ferry to Osaka leaves Busan on Tuesdays, Thursdays and Sundays at 4pm. Tickets start at 110,000 Korean Won and can be bought at the International Ferry Terminal in Busan.
Other possibilities are Shimonseki (starting at 75,000 Won) and Fukuoka.

Mode: TO

Type: Ship/Boat