The earliest memory - The Leshen waking up in a garden.  You can hear a voice that sounds similar to Echo's, but...more warm and motherly.  "Good morning, my child, I see you are awake.  Your name is Leshen, you are the guardian of this place."
The Leshen doesn't seem as...violent in this set of memories.  It's more gentle, tending to gardens and gently interacting with birds on it and such.

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Another memory, also in a garden.  There's the red headed woman in that one add - Erica McDanial was it?  She's got a whispy, ghost-like owl on one of her shoulders and a wolf made of earthy brambles at her side.  Aina's voice: "This is Erica, and her friends.  They wanted to meet you!"
The Leshen is quite gentle and plays with the dog and the owl for quite a while.  Erica speaks with the disembodied voice, but the conversation doesn't really carry over.

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Time fast forwards a bit, same people as before, but some Leshen like YOU are now here too.  Erica speaks, "Oki and Wyrundir were quite fond of him and...guess they wanted to make him some friends."

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Another memory, also in the garden, but the Leshen is now alert.  It's banging on a gate to try to get out, but can't.  Outside, you can see draconian beings attacking a city.  "I am sorry, my beloved child.  You must rest, rest until you are called upon."  The room starts to fill with a cold air, and things go black.
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The Leshen awakens at the behest of...something.  A screen shows security footage of YOU GUYS entering the Labyrinth.  It focuses its attention on you in particular.  Then a voice starts, from Aina.  "My child, if you are hearing this -" BZZZT.  Something cuts the memory short, ending with just a flash from two red, glowing eyes and a child's laughter.