human
Emilia:  "Ahhh, but it’s not like this is a sea or anything."
gpt
Subaru:  "What’s a sea?"
human
Emilia:  "It’s like a…never-ending puddle of water. My homeland had that all around it, see."
gpt
Subaru:  "Huh, that’s incredible. It’s nice that you’d never run out of water in a place like that." Emilia’s eyes glimmered. Subaru smiled at her childlike impression of his birthplace. Unfortunately, using seawater to supplement insufficient drinking water was spectacularly suicidal conduct. As it would be fruitless and complicated to explain that, he decided to simply appreciate Emilia’s cuteness. In the meantime, the dragon boat followed the waterway’s current, picking up speed as it proceeded into the center of the city. A dragon boat heading down the left lane of the broad waterway gave Subaru pause. Mysteriously, the flow in the waterway’s right lane was heading upward. Just what strange physics were at work here?
human
Emilia:  "Tee-hee-hee. Surprised? Actually, I know why. Look at the edge of the city."
gpt
Subaru:  Looking in that direction, he saw that the circular outer wall surrounding the city was connected to some stonework towers. There was one giant stonework tower for each of the cardinal directions—west, east, south, north—it was impossible to miss them. "Ahhh, I was wondering about that. What are those towers?"
human
Emilia:  "Those are the control towers that regulate the flow of water inside the city. Apparently, the towers themselves are complex metia that use the power of water magic crystals to control the current. It seems like the city’s huge water gates are operated there, too."
gpt
Subaru:  "Heh, so those are giant metia! That’s really something." Nodding at Emilia’s explanation, Subaru now knew the mysterious mechanism behind the waterways flowing in the city. The Water Gate City of Pristella really was different from other cities in quite a few respects. Beginning with its laws and its standing as a completely independent city, there seemed to be many things he ought to study about it.
human
Otto:  "Incidentally, please be careful. Sullying the water is a grave criminal offense in this city. This goes especially for Garfiel, who has been gazing at the water with a frightened face for some time now."
gpt
Garfiel:  "It ain’t that I’m scared of the water. I just don’t wanna end up like some waterlogged cat."
human
Otto:  "Then could you stop holding on to my cloak with all your strength? Judging by the sound, it might well tear soon." Sitting in the center of the dragon boat, Otto sighed at how Garfiel couldn’t seem to calm down at all. The exchange brought a smile to Emilia while Beatrice simply shrugged.
gpt
Beatrice:  "Goodness, everyone is too worked up. Would you behave yourselves and learn from Betty’s ladylike example, I wonder? Subaru thinks so as well." Beatrice winked toward Subaru as she sought his agreement.
human
Subaru:  Then Subaru gave Beatrice a little nod. "—ad."
gpt
Beatrice:  "...What did you say just now, I wonder?" It was Beatrice alone who overheard the murmur so small, it was almost inaudible.