A pass makes moving simple.

Which one depends on how you want to travel.
Two are worth looking at first.

Kansai-Hokuriku Area Pass

¥19,000 · 7 consecutive days

Kyoto, Osaka, Kanazawa, Toyama, Fukui, and west as far as Okayama. Reserved seats included. Doesn't reach Tokyo.

Hokuriku Arch Pass

¥35,000 · 7 consecutive days

Tokyo, Kanazawa, Toyama, Fukui, Kyoto, Osaka, plus airport access at both ends — Narita, Haneda and Kansai. Reserved seats included. Doesn't go west of Osaka.

Official details →

Neither covers the Tokaido Shinkansen.

Seven nights is eight days.

Arrive on day one, stay seven nights, and you leave on day eight. A seven-day pass can't cover both ends.

Count every train.

Not just the day trips. The train that brings you to Tsuruga and the one that takes you away are part of the sum.

A pass doesn't guarantee you a seat.

Reserved seats are included, but availability still depends on the train.