In order to know what has to be done once he's found his destiny, he must learn the truth of this world. So was Dáinsleif's belief upon immersing himself in a samsara to see what went wrong with Khaenri'ah and more importantly yet— since when. For there lied the answer he was looking for since the very beginning, and it's the prospect that too long has it been for him to be able to do anything at all to prevent the kingdom's destruction.
For the first time since calamity struck, that was the moment Twilight found peace in his heart at the knowledge that there was naught he could've done. And with it a single wish materializes into his fate: a desire that no one else has to go through what Khaenri'ah had, specially being cognizant of the fact that there are those who pursue to bring calamity to those who continued to live under the Seven.
Simultaneously, Dáinsleif made it his own mission to discover the truth of this world, to have a better understanding behind his forbears' obsessions. For one thing is clear, and it's the only thing he will give them credit for: Teyvat is commanded under an unjust order that must be defied and changed. Not solely out of selfishness to stop enduring unfairness once aware that it exists, for everyone who in the future may find out and run the risk of being on divine's crosshairs should they make the mistake of opposing them by their means— fundamentally incorrect in how to approach the situation.
And for that to happen, tracing spirit veins all the way to the moment that triggered Khaenri'ah's founders decision to build a new nation without gods was a necessity. Reason why Dáinsleif now treads through mists of darkness brought by the Apocalypse— with the coming of a new entity that defied the Primordial One and Nibelung's failure to oppose it through Forbidden Knowledge. What a grave mistake to do, even for a wise creature like him.
Lunarescent seraph perks at the sound of a voice that echoes in the space he's in. No matter how hard he tries to look through the mist, he cannot see where is the source. Until... all of a sudden, he sees a giant eye opening. Inevitably does Dáinsleif jump, his heart stills with shock that sends adrenaline through his nerves to act and walk back and away from the creature. Its presence becomes more visible through its aura, as if it was completely on its own to make itself be seen. Dark mist disperses from it enough to see that it's an enormous dragon lying on the ground, completely still— and not because it so desires, Dáinsleif presumes.
Sapphire irises widen as soon as the dragon reveals its knowledge about his current situation, an occurrence that never before happened before and, as Twilight Sword's perception goes, no one should know about. For all of these are memories, they have happened in the past and nothing will change the future. So why...? ◜How do you know?◞ It is not out of losing composure that Dáinsleif deigns to ask, as much as the hazard it may pose on his soul if the current affair of his circumstances are known by other individuals. Should anything happen to his soul, the rest of himself will be gone forever. Even worse, if its influence can reach into the future, that may pose an even more serious problem. ◜Nobody ever noticed before, but you do. Who are you?◞