Quick answer
Official copy confirms a looming darkness threatens Teradea, but it does not identify the force, villain, or final confrontation.
Confirmed evidence
- The darkness is mentioned alongside earthquakes and storms
- Guardian Spirits are allies
- the Forest of Echoes mist is central to the premise.
- Primary source: Natsume preorder announcement, dated 2026-05-12.
How to use this answer
Label theories as theories and keep the core story answer limited to what Natsume has stated.
Check the dated first-party source.
Separate the confirmed fact from platform, retailer, or story assumptions.
Recheck the live listing before acting on changing data.
What this does not confirm
Connecting the darkness to Lupo, a Guardian Spirit, or another named character would be speculation.
Source and review date
Natsume preorder announcement · 2026-05-12. Editorial review: 2026-07-31.