The school is constantly rainy and humid, very much like the school environment during Wanderer Elementary School and junior high school. The entire school is under construction all the time, and there are steel supports everywhere, so Wanderer and other students need to walk and climb on these stands to get to their classrooms.

The cloudy conditions made it necessary for all classrooms to turn on the lights in order to study. The low-contrast incandescent lights sizzled, and the students listened quietly. They hung the clothes on the decorated racks, seemingly to dry the wet clothes, but the continuous rain made the clothes even wetter.

Wanderer's classroom is in the last room on the top floor, just like the third-grade classroom in Wanderer Junior High School in the real world. This classroom is exposed to the most sunlight. The location of the last room in the corridor means that it has the best ventilation effect and can best see the distant scenery - although, under the influence of the continuous rainy weather, the possibility of seeing the outside environment is very low.