The heart of the Estuary was out there, in front of them, looming in the boundless darkness like a black monument to the harrowing battle Ariel had once fought against the Stone Titan.
The first time around, Sunny had simply been drawn here by the currents after following the Guiding Light through the mist. The sacred relic of the sybils could guide its owner anywhere — or rather, to anyone. As long as one knew their True Name.
The True Name that allowed Sunny to reach the heart of the Estuary had been placed in Cassie's memories by Torment, and then erased from Cassie's mind as soon as she channeled it into the Guiding Light. It had to be erased because Cassie could not have withstood knowing it for more than a few seconds... not back then, at least.
During the Nightmare, neither Sunny nor Cassie knew whose name Torment had bequeathed upon them. But come to think of it... it had to have been the True Name of the Cursed Terror who had made its nest in the heart of the Estuary — of the Thieving Bird.
Merely knowing the name of a Cursed Terror would plant a seed of Corruption into the soul of an Ascended, as long as they remained aware of it for more than a few seconds. In fact, even enduring it for those seconds had been a miraculous feat on Cassie's part.
‘Torment...’
Although the harrowing Plague was long dead — or had never existed at all, rather, just like the Mad Prince had only ever existed in the Nightmare — and could not come back to haunt him, Sunny still felt uneasy when thinking about her.
Torment had known countless things that even he did not, and took them all with her to the grave.
In any case, today, Sunny did not need the Guiding Light to find the heart of the Estuary. The mist was gone, after all, and so were the turbulent waters. So, the stone edifice of the Great River's source was revealed in all its daunting immensity, hidden in the darkness, and all they had to do was steer the ship towards it.
Because of that, Sunny could get a much better look at the heart of the Estuary than he had in the Nightmare.
All three of them — Sunny, Nephis, and Ananke — remained silent, looking at the colossal black sphere in subdued silence.
'...Huh.'
The Estuary was irregularly shaped and could only roughly be called a sphere. In truth, it resembled an ellipse more, or perhaps even an inverted pyramid with rounded edges. Several tall, strangely shaped mountains protruded from its surface, their peaks gaping with dark openings like volcanic craters.
It was a shape that seemed difficult to describe, but could actually be easily relayed with one word.
The heart of the Estuary — and therefore of the entire Tomb of Ariel — was shaped... like a heart. It was a titanic heart made of black stone. The mountains were the aortae, and the Great River used to flow through them like blood.
Which it had been, once.
Sunny had assumed that the Estuary had been fashioned out of the heart of the Stone Titan, but never thought that the resemblance would be so literal.
'Crazy bastard.'
Ariel, the Demon of Dread, had really just ripped out an Unholy Titan's heart and used it to create his impossible River of Time in the pyramid built from the Titan's corpse.
"We are here."
His voice echoed in the darkness, making Nephis and Ananke shift uncomfortably. Ananke remained silent for a long while, and then smiled bitterly.
“So this was where Aletheia came searching for truth. This was what she found... where the curse that haunted and destroyed my people was born."
For a moment, Sunny wondered what would happen if he summoned the Nameless Temple and let Ananke tether herself to its Gateway. Would she be able to cross the realm boundary and enter the waking world, or would the Gateway remain dormant, since she had never been a person of the War Realm to begin with?
They would have to check and see later... Sunny was aware, of course, that he was suddenly thinking about all these unrelated matters simply to ignore the complicated mixture of emotion brewing in his heart. He finally returned to the Estuary... the place where he had won his long-awaited freedom at the cost of losing his fate, his companions, and his place in the world.
‘Was it worth it?’
Sunny felt like he had made a terrible, irrevocable mistake by abandoning his friends to pursue liberation. That was why he was here to undo what he had done, after all. He was full of regret and longed for all the things he had lost, and he understood what true freedom was much better now, as well.
But, at the same time...
He felt that the answer was yes. That it all had been worth it, in the end.
If he were the person he had been back then, and was given the same choice, he would still choose to break his shackles and become free.
Perhaps someone more enlightened and wise could have made a different choice, but not Sunny... not the man he used to be, at least. And he had to break his chains first to become the man he was today — the man who accepted the burden of responsibility, which bound him like a chain, and was ready to tether himself to the people he held dear as well, even if it meant sacrificing his freedom.
Sunny had to break the chains that had been forced upon him first in order to come back and choose them of his own free will, here in the Estuary...
What had started here was bound to end here, as well, just like the Great River used to begin and end in the Estuary once.

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