6+boys, chair, classroom, clock, day, desk, faceless, faceless_male, formal, ghost, golem, hayapi_(sinsin08051), hitodama, human_sacrifice, indoors, long_sleeves, male_focus, multiple_boys, open_mouth, original, ritual, school_desk, school_uniform, sitting, size_difference, string_of_flags, tally, third_eye, wall_clock, what, window