human
Subaru:  “It hasn’t been charged in a while, so I hope the battery isn’t dead… Ohh!” After a single tense moment, the boot-up sequence appeared on the screen. A few seconds later, a dazzling light shone from Subaru’s hand.
gpt
Rem:  Rem looked at Subaru with surprise at the brilliant sight. "Subaru, what is that?”
human
Subaru:  “Lost technolo… Er, future technology. A cell phone. Looks like it still has a little juice left, luckily for us.”
gpt
Subaru:  The cell phone had been off ever since his generous use of it on the day he had been summoned to this other world. It was one of Subaru’s few possessions from home. He had a few other personal belongings, but this was by far the priciest and most useful—at least, as long as its battery held out.
human
Subaru:  “I never imagined the next time I’d use it would be as a flashlight, though.” Using it in a manner inconsistent with its original purpose, Subaru shone the light of civilization upon the contents of the luggage.
gpt
Subaru:  After he easily found the map he’d been searching for in the sack, Subaru spread it out over Rem’s lap. “I’ll shine this on the map, so take a look-see.”
human
Rem:  "Yes, thank you very much.”
gpt
Otto:  At that moment, Otto poked his head in from the side, his interest keenly piqued. “Mr. Natsuki, what is that? I’ve never seen such a thing.” Leaning over from his dragon carriage, immediately to the left, he tilted his head in confusion. “A crystal lamp I have never seen bef— No, not a crystal. It seems to be made of some material unfamiliar to me.”
human
Driver:  Noticing Otto’s reaction, a man in his prime with a bandanna wrapped around his head pulled his dragon carriage along the right side as well. The eyes of the driver glimmered as his gaze remained pinned to Subaru’s cell phone.
gpt
Subaru:  Ordinarily, their reactions would have doubtlessly brightened Subaru’s mood, inspiring him to casually show off and brag. However, the current Subaru was in no mood for such pleasantries. "Sorry, it’s a secret item the marquis gave to me. If I told you about it, you might vanish without a trace. Best to forget you ever saw it.”
human
Otto:  “Whew, that secretive explanation just reeks of money…” Otto’s interest seemed to have only deepened.
gpt
Rem:  But before a long cover-up conversation became necessary, Rem lifted her head from the map and nodded. “I realize where we are now. A little farther and we should be able to see the Great Flugel Tree. From there, we take the road northeast and enter the Mathers domain shortly after.”
human
Subaru:  “The Great Flugel Tree?” Subaru inclined his head at the unfamiliar term.
gpt
Otto:  Otto raised a finger. “The Great Flugel Tree is a huge tree found along the Liphas Highway that seems to pierce the very clouds. The tree really is huge like you wouldn’t believe. According to legend, a sage named Flugel planted it.”
human
Subaru:  “So that’s why it’s the Great Flugel Tree."