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"The Keel Mountains traversed at last, we met a Dragon who spoke thus: "Sheraton am I, who interprets the signs. An answer to my question, give. If you can, complete my role will be, and I will leave this land. Though equally, it exists before everyone's eyes, grasp it not one person can. Tell me-What is it?""
-Epitaph of Twilight

this is from .hack//Another Birth Vol.2//Mutation. Akira (BlackRose) asked her friend about the Epitaph and she told her what she remembered. also, in the game (part 2 Mutation), there is a Wavemaster AI that keeps asking "do you have the end?" "I want the end" That AI is named Sheraton (the same name as the dragon in the epitaph). later without kite, blackrose goes back and says to Sheraton that she knows the answer. the answer is this moment. then Sheraton smiled and dissapeared. as he was dissapearing, she heard a faint "thank you".

i wanted to tell you this because i don't think this is in any of the games.

Third one found, and bought. I'd like to add another piece to the proverbial puzzle from Another Birth Vol. 3. Mia had said this to Kite.

"Plaird of the Seven Sisters
Falling in love with a human,
Became a Shadowed Oneand
was exiled from the Dark.
Hence, her name came to be
called, Plaird the Fallen.
At her wanderings' end,
She settled in seclusion,
in Arche Haokar.
However, those days
may not last.
A reunion may come, or
may not. Plaird's form
vanishes at the coming of the
habringer of the Wave."

It could be talking about Mia. She fel in love with a human, and became a PCish thing. Then, with the Wave, she became Macha. I don't know yet...but that is a new piece of the Epitaph of Twilight, straight from page 177 in Another Birth Vol. 3.