A detailed webtoon background scene of an empty high school classroom, flat frontal view. A clean green chalkboard with a wooden frame is mounted flat on the center-left wall, completely blank. The classroom is filled with subtle ambient details: a simple wooden teacher's desk is partially visible at the bottom, a window frame with soft daylight casting gentle shadows on the light-beige wall, and clean floorboards. The atmosphere is calm and cinematic. The artwork features clean line art, sharp outlines, and beautiful cell shading that perfectly captures the professional, mature graphic style of the manhwa "High School Conquest" (고교정벌). No people, no clutter.
