Entering Japan is not a yes/no question you should answer from enthusiasm alone.

Japan Market Entry Decision System is a self-serve workflow for founders and managers deciding whether, when, and how to move forward in Japan. It separates evidence quality, business attractiveness, and execution readiness, then forces the biggest unknown into a smaller test before the next commitment.

Move from Decision Definition → Evidence Map → Weighted Decision Score → Readiness → Biggest Unknown → Smallest Useful Test → Commitment Gate → GO / TEST / PAUSE / STOP. The package includes the playbook, scorecards, evidence map, experiment planner, action plan, worked example, and a guarded AI companion.