Quick answer
Yes. Remote islands contain rare animals not found on the mainland, and Natsume says players can befriend them.
Confirmed details
- Nautical charts help locate islands.
- Some species are island-exclusive.
- The complete roster is not announced.
What this means for players
Befriending items, spawn times, island locations, companion skills, and mount status remain unknown.
This answer is intentionally limited to the current game’s published information. It does not import values, characters, schedules, or mechanics from earlier Harvest Moon titles.
Official source
Natsume title announcement — March 11, 2026. Independently summarized and checked on 2026-07-19.