First things first: shopping! Buy new armors for Cecil and the Ice Claw and Thunder Claw for Yang so he has more attack types to play with. Yang should equip two different claws at all times, swapping claws as the situation warrants. Physical attacks always get bonus damage whenever the enemy is weak against any element in the attack, and there's no extra benefit for having two of the same element. Since Yang's attack power ignores weapon strength anyway, there's never any reason to pass on a claw that strikes a weakness, assuming any exist. Most of the enemies in the upcoming battle have no weaknesses. However, one has a Thunder weakness, so make sure to equip the Thunder Claw.

The Thunder Claw works even better in the DS remake, since the human enemies are now weak against it. The Leshy, similarly, has a new weakness that the Fire Claw can exploit. I suppose it seemed a bit silly to have so many enemies with no weakness right after Yang got the means to hit weaknesses.

You'll probably want to heal, too, but don't bother with the inn. Instead, go outside from the second floor and climb the eastern tower. At the top is the king's room, and for a limited time only...

Said in a rather childish way, and quite out of character for Cecil.

And that slap in the face of royalty costs you nothing. Hah! Loot both towers for items, and stop by Yang's room in the western tower to meet his wife, if you like:

あんた (anta) is a rougher あなた (anata), so I picked "hon" as a rougher "honey".

Yang likes to suffix names with 殿 (dono), which is respectful, archaic, and roughly equivalent to "sir" (or perhaps something like "his lordship").

Anyway, she has a point. Go see the king in the throne room to advance the plot, but make sure to save and dequip Rosa first.

Cecil steps forward.

Gilbert steps forward.

Agree, or the party will leave the room and you'll have to go through the whole scene all over again.

Yang leads Gilbert and Cecil to the exit. Rosa calls Cecil to a halt.

Rydia nods, and Cecil leaves with the others. Fade out.

Yang stands at the castle entrance, flanked by Cecil and Gilbert and backed by a group of Monks. Another one rushes along the castle wall above to announce,

From here on, the party is locked into a series of battles, with no opportunity to access the menu between fights. Individually, the battles are fairly easy, but with no real healers and no breaks, they're more of a problem than they would be otherwise.

Naturally, Yang and Cecil should attack, while Gilbert does better to stay in the back row and hand out Potions as needed. He can also equip the Dream Harp and attempt to put enemies to sleep with it, especially in the NA version, which avoids a hit penalty by making harps long-ranged.

After the first battle...

Bombing ensues. Cecil speaks to Yang.

Everyone falls back to the castle entryway.

I never liked Cecil's NA line. It sounds too much like "it's not just you causing the war" when he means "it's not just for your sake that we're fighting."

More attackers arrive, monsters this time instead of soldiers.

After beating them, yet more attackers arrive, overwhelming the Monks guarding the side doors before converging on the main force.

Most of the force falls back to the next stairway, though some don't make it.

The EasyType replaces おうのま (ou no ma, throne room, more literally "king's chamber") with へいかの　へや (heika no heya, His Majesty's room).

More opponents enter.

After the battle, still more opponents enter.

The party falls back to the throne room. Only one of the trainee Monks remains with them, not that they helped much anyway.

The generic Monk walks to the door and...

...make that none of the trainee Monks. One monster later... more rush in!

As they start to fall back, Gilbert trips, and monsters pounce on him. Sheesh.

Okay, fine, might as well save him. After the battle, the party finaly falls back to the Crystal room. Then someone familiar walks in.

I didn't think to count this at first, but you're given the impression that Cain most likely died in the rockslide at Mist, so... Number of times someone has survived apparent certain death: 1

Yes, you have to fight him. Jerk. Don't bother trying to win, since the battle is scripted and he has 65,000 hit points anyway.

Once Cecil's HP gets low...

And combat ends with Cecil flat on his face. So much for dignity.

Yang steps up, but then another voice interrupts...

Rosa walks in, followed by Rydia.

Cain seems conflicted, and then yet another voice interrupts.

Cue the Dramatic Evil Music™. Everyone turns to the entrance, and Rosa and Rydia step aside as someone enters, clad in armor that looks even more demonic than Cecil's.

Cue the Dramatic Evil Lightning Bolt™. Yang and Gilbert are blasted out of the way and don't get up.

Rosa calls out to Cain as he walks toward the Crystal.

Golubaeser grabs Rosa and leaves. Cain grabs the Crystal and walks back to Cecil.

And Cain leaves.

Rydia, who had the sense to stay out of the way and thus avoided being fried or abducted, now moves between the fallen warriors.

And they all get up, like magic or something. Oh. Right.

It's kind of sad that one of the main reasons she has any white magic is as a plot device.

Everyone looks depressed. Except Rydia, because she's Awesome like that.

The party regroups, minus Rosa, and you're free to walk about the castle.

A treasure room connected to the throne room contains, among other things, a slightly stronger shield for Cecil.

An old man in the throne room explains why the king isn't there.

The king seems like he'll be fine. Naturally, you can't rest in his bed any more now that he's using it.

The EasyType changes へいかも　なうての　モンクだったんじゃ (heika mo naude no MONKU datta n ja, His Majesty, too, was a famed monk) to わかいころは　へいかも　モンクだったんじゃ (wakai koro wa heika mo MONKU datta n ja, when he was younger, His Majesty, too, was a monk).

Yang's wife is still up in their room.

You can't leave the castle yet, and everyone who isn't talking about the attack says to go rest, so head for the inn.

The party enters the inn, and instead of resting, talks strategy.

Please tell me the translator didn't think there was only one airship in the world. That would bother me more than poor grammar.

The party rests, and the next scene begins in the king's bedroom.

The EasyType changes どうこうし (doukou shi, accompany) near the beginning of the block to ともにゆき (tomo ni yuki, go with).

Equip that on Cecil right away. Combining stat bonuses (and a largely trivial penalty) with a fatal strike, it's a major upgrade.

Buy anything you want and head east to the waiting ship.

And by the way, remove all equipment from everyone but Cecil before entering. You'll see why soon.

Yang's wife is here to see them off.

The EasyType removes きいつけて (ki wo tsukete, take care) from Yang's Wife's first sentence, then replaces しっかり (shikkari, stand firm) with きいつけて in the second.

The party boards the ship.

The sailors get to work, and the ship sails off.

The EasyType changes Yang's ごじん (go-jin) to the more common おかた (o-kata); both are respectful ways to refer to a person, and the first is more obscure.

The ship continues. And then starts shaking...

A vortex appears before the ship. Something sticks out of it.

What looks like a giant sea serpent rises from the vortex.

The sailors just keep panicking. Then, with a particularly large shudder, Rydia falls off.

Yang jumps in after her.

The boat shakes again, throwing nearly everyone off their feet.

That's at least the fourth time an うわあ！ from Gilbert has turned into a "No!" in the NA version. They likely all reference the same line of text.

Then the whole ship is sucked into the vortex as Leviathan leaves. Cecil wakes up on a beach some time later.

But there's a town nearby, so Cecil heads there.