Direct answer
Confirmed platform facts are the five launch families, shared date, one-player classification, and three current physical variants. Performance, cross-save, cross-buy, upgrade paths, file size, and preload remain assumptions until official listings say otherwise.
Confirmed relationship map
Release announcements establish availability, not every technical feature.
A trailer can show gameplay without proving final platform performance.
Retailer metadata can change and should be rechecked before purchase.
How to use this page
Use this page as a compact evidence filter when comparing rumors or store snippets.
This URL keeps one decision or gameplay purpose. When verified information changes, the existing page will be updated rather than spawning a competing near-duplicate.
Evidence boundary
Not yet confirmed: exact unlock requirements, numerical values, platform-specific technical behavior, and launch-day route details are not added unless Natsume or reproducible gameplay evidence supports them.