The story
Fiction and adapted settings written by Akitsora Gaming for this title, including invented dialogue and events. This is not a historical or folklore reference. The rules and specification tables define the gameplay and math.
A kiri tansu is a stack of paulownia boards seasoned for years, one hand plane, and a whole warm afternoon of the cabinetmaker's time.
I. Seasoning the wood
Paulownia is left outdoors in wind and rain for years until its bitterness fades and the wood settles; the straightest grain is saved for the drawer fronts.
The maker says paulownia is light and soft, and a good stroke of the plane leaves a shaving thin enough to see light through.
II. The joinery
Not a single nail: board meets board in dovetails and butterfly keys. Push one drawer home and the air inside the chest gently nudges the next one out.
Last come the copper corner fittings and ring pulls — and the number on a falling paulownia-crest fitting is the weight of the spin (base game ×2 to ×20).
III. The handover
Gather 4 handover tags and the two doors of a paulownia chest swing open onto the handover table. Over the next 15 spins the multiplier keeps growing (×2 to ×500).
3 more handover tags add 5 more spins.
IV. The treasure chest
The last drawer slides home with a soft knock; the maker opens his palm and hands the chest over — built to hold a family's keepsakes for decades.