Good to hear!
I'm very, very glad if this story helped Roberto evolve somewhat 
So................. (I hate writing big, clunky wall of text....)
Days pass, bittersweet for Roberto and his beloved, strange and wondrous for Wirth and Lucas ("Look, we're in an undersea kingdom!"), especially once they discover Herakleion's vistas.
They feel quite boring to Acutus ("Yeah, I'm under the ocean, so what?"), until he is asked by Nera to help hunt down the remnants of Attumah's barbarians, a task he proves himself quite adept to, thus quickly earning the respect of the city guards and the warrior woman.
All the while, the preparations for Soteira's coronation are underway, meaning the future queen has less and less moments to spend with her beloved. The magi are mostly left to their own devices, although they are still pestered by tailors and servants who want to dress them in the best clothes, and make sure they’ll know what to do and where to stand, basically explain them "you'll stay here, shut up, and move when asked. That's it".
Then, the day finally comes. Hours before, the magi have been woken, dressed and prepared, having them wait inside the palace with Riad (Who's been fetched from his village, and is as wide-eyed as can be expected), Nera, Tulha and several score of other resistance fighters, who found themselves outside Leolinus enchantment, all amidst a larger contingent of city officals and nobles.
Finally, the order is given, and all walk through the palace doors, taking the northern road to the Church of Poseidon.
All the merfolk from the city outskirts have come, and it is amidst a massive crowd that you enter the church. The city people still look sickly and apathetic, though, something you've learned by now to associate to Leolinus's spell. Luckily, with Attumah dead, they fall back on their previous allegiance to the line of King Triton.
You reach your place, right on the left, and wait once again, the church filling up until it seems ready to explode.
Near Poseidon's statue, at the end of the church, waits Aubert, his grand priest, an old merman, palish skin clothed in a blue robe enlightened with golden lines and amber jewels. On each side, 3 priests, 3 priestesses, clothed in similar but less adorned robes, await.
You hear Soteira’s arrival before you see her, the crowd outside cheering their queen. At last, earing silvery scales, the princess enters the church, as majestic as ever, holding her father's trident, an honor guard behind her. She walks up to Aubert, settling on a stair below him, and kneels, holding the trident firm. Slowly, silence sets on the church.
People of Heracleion, foreign visitors, strikes up Aubert, his voice seemingly reverberating throught the church.
We are gathered today by the grace of Poseidon, God of the Seas, to proclaim our renewed allegiance to his divine line and will.
We have suffered much, losing in quick succession both our beloved king and queen, but also the heir apparent. This could have been enough to break our will, sunder the divine mandate given to our people. This was not to be. Our princess survived, sole heiress to the throne of our kingdom, and, Poseidon wills it, as his direct descendant, she will be our queen, and ensure our realm's survival and enduring prosperity.
Does anyone here contest her claim to the throne, by right of succession or trial by combat?
Silence reigns, as Aubert pauses for a moment.
So shall it be, then.
He gestures for one of the side priestesses, which goes toward him, holding a big conch, upon which rests the golden crown of Heracleion, last seen on king Triton's head. Aubert seizes it, raising it high above Soteira's head.
Princess Soteira, daughter of king Triton, grandaughter of mighty Poseidon, do you pledge to uphold our god's law, our people's tradition, our ancestor's will?
I do
Then, as the upholder of all that is holy and sacred to our realm, I recognize you as our blessed queen
Just as Aubert pronounces these words, you feel, rather than see, mystical waters swirl towards Soteira, not unlike what happened when Attumah tried to strike Roberto down, but wider, gentler, yet more powerful. And then, as he lowers the crown unto Soteira's head, a massive wave of mystical power explodes out of her, washing over the crowd, and expanding outward, through the church's walls.
Soteira raises herself, and turns towards the crowd. For a moment, you almost don't recognize her. She's still the same, obviously, but at the same time she looks bigger, way more forceful and regal, radiant with power, her trident shining in her hand. Rank after rank, the crowd kneels before her, just as, to your side, Nera, Thula and their soldiers do, Riad following her lead.
I'm not finished yet!