gpt
Subaru:  At least he worked himself up thinking that, but after proceeding a short distance past the door… “—A second door. And it disappeared again.” Subaru watched as another iron door glowed and disappeared before his eyes. It happened right after Subaru touched it. It was hard to believe he had just awakened to some new ability, so the only other explanation was they were designed to do that, but…
human
Subaru:  “What’s the point of a door in a dungeon that doesn’t actually block anything?” Subaru was at a loss trying to explain the purpose of having a door like that. It wasn’t dividing up rooms or anything, so there was little reason in having a door that anyone could open.