Anybody else think that when they left the family mansion, they left the world altogether? It's like they've gone into the void, and all substance appears for convenience. It's like they forgot to tell the mangaka that this style of storytelling relies on context clues from the environment. When there is no background, there is no environment, and no sense of place.
You get more background from a Charlie Brown comic. I wonder if the publisher went to comiket looking for new blood, and lazily chose the person with the longest line. This feels more like a hurried doujin than a manga that was properly edited.