(add-on) “Full Kiribako” Packaging Upgrade — Inner Level Boxes Only (Add‑on)

For kickstarter backer

Pre-order add-on (Ship about Dec 2025)

By request, you can now upgrade each inner level box to kiribako (paulownia wood).
Note: outer/master kiribako is not included.

Counts: Kanji 5 / Grammar 4 / Vocabulary 5 (per deck)