Field Diary
OKINI Tokyo in Kamata: One Rate, Three Ladders, and a Deriheru Course You Don't Pick Until Five Minutes In
Every course at this Kamata deriheru runs on one invariant rate — ¥8,000 per thirty minutes — across three different time-of-day ladders that differ only by a flat subtraction. The real story is the house system that lets you choose your course length after the first five minutes, which quietly moves the most expensive decision in the business from extension prices back to booking prices.