1girl, aged_up, azuminonomizua, blunt_bangs, book, breasts, business_suit, chalk, chalkboard, classroom, cleavage, closed_mouth, collarbone, collared_shirt, desk, formal, greyscale, holding, indoors, jacket, katou_asuka, large_breasts, long_hair, long_sleeves, looking_at_viewer, monochrome, on_desk, open_book, pov_across_table, school, school_desk, shirt, solo, suit, suit_jacket, teacher, upper_body, watashi_ga_motenai_no_wa_dou_kangaetemo_omaera_ga_warui!