Should we get the 21 day pass?

Hi Hikari!

Here is a little cost breakdown without the JR Pass

Narita --> Nakatsugawa ¥ 14,130
Nakatsugawa --> Kakegawa ¥ 7,320
Kakegawa --> Kyoto ¥ 6,810
Kyoto --> Tokyo ¥ 13,220
Tokyo --> Minakami ¥ 5,850
Minakami --> Tokyo ¥ 5,850
Tokyo --> Narita Airport ¥ 2,940

This adds up to ¥ 56,120.

The 21-day JR Pass is ¥ 57,700 this means you are short by just ¥ 1,580. You will easily be able to make up this amount with day trips in the Shizuoka region. Also the freedom to take any train you want for 21 days is just amazing.

Hope this helps!
-Daniel

PS: Nice plan! Especially like the visits to Nakatsugawa and Kakegawa.

Thank you very much Daniel-san.
I'm ordering now the 21 day passes :-)
I have friends in Kakegawa so we are staying there for a few days and taking the occasion to visit Fuji san as well.
I'm so excited to come back to Japan after so many years!
Hikari

Thank you for ordering with us!

Make the most of your trip and let me know if I can help with anything else!
-Daniel