The Heart-to-Hearts in Tephra Cave will not all be available to you as soon as you reach the area. Some of them will not unlock until much later into the story quest, or until you have met new people and developed certain affinities with them. These Heart-to-Hearts give affinity boosts depending on the answers you give during cut scenes. If you choose the optimal answers then you will get the maximum amount of affinity that the cut scene gives out.
Dunband and Riki: Glowing in the Night
|Spring of Grief||Lilac Affinity||–|
- Riki tell Dundun.
- Riki surrenders!
Fiora and Reyn: A Scene Revisited
|Kneecap Hill||Pink Affinity||After Reaching Fallen Arm|
- The first time I came here.
- No one thinks that, Fiora.
Shulk and Reyn: The Legend of the Spider
|Bone Corridor||Lilac Affinity||After the Events at Mechonis Core|
- You’re scared of spiders!
- I played a prank on you!