- Start a new game.
- Go to the shrine at the top left corner of the map.
- Talk to Nairi and exhaust all conversation options. Make sure you learn what happened to Anaharu.
- Go to the chieftain's hut and talk to Ruanu.
- Talk about Nairi and observe the following conversation node:
Observe that Nairi totally mentioned Anaharu but you in order to acknowledge it you must lie, as though in reality she hadn't mentioned him. But she did, so saying "She sure did." would be the truth and the other two options are lies.