Below are the locations of all 8 memory shards for Kokoro in Blue Reflection: Second Light.
Kokoro’s Memories: 1
This memory shard can be found in the southeastern corner of First Layer: Breezy Woodland Path in The Faraway.
Kokoro’s Memories: 2
This memory shard can be found in the northeastern corner of First Layer: Breezy Woodland Path in The Faraway.
Kokoro’s Memories: 3
This memory shard can be found in the northwestern corner of Second Layer: The Hidden Village in The Faraway.
Kokoro’s Memories: 4
This memory shard can be found in the northeastern part of Second Layer: The Hidden Village in The Faraway.
Kokoro’s Memories: 5
This memory shard can be found in the northeastern part of Second Layer: The Hidden Village in The Faraway behind the large building.
Kokoro’s Memories: 6
This memory shard can be found in the southwestern part of Final Layer: Weathered House of Resolve in The Faraway.
Kokoro’s Memories: 7
This memory shard can be found on the western side of Final Layer: Weathered House of Resolve in The Faraway just before the boss fight.
Kokoro’s Memories: 8
This memory shard can be found on the eastern side of Final Layer: Weathered House of Resolve in The Faraway after defeating the boss and returning to the temple when you’re able.