Is the JR pass suitable for 4 weeks travel?

Hi there!

Interesting itinerary! Let's see if a JR Pass could be of help.

Osaka - Kobe ¥ 390
Kobe - Fukuoka ¥ 14,470
Sapporo - Aomori ¥ 13,600
Aomori - Tokyo ¥ 17,780
Tokyo - Mt Fuji ¥?,???(depends on area around Fuji visited)
Tokyo - Kyoto ¥ 13,420
Kyoto - Osaka ¥ 540

For a total of ¥ 60,200 or ¥ 2,500 already in savings as the 21 day JR Pass is 57,700. Note that the JR Pass is also valid for local travel around Osaka/Tokyo and can be used for (partial) travel to Fuji as well. Additionally it also covers travel from the Aiport in Hokkaido to Sapporo.

I hope this helps!
Daniel