1girl, bad_pixiv_id, black_skirt, book, bra, bra_visible_through_clothes, breasts, buttons, chalkboard, classroom, crossed_legs, desk, greyscale, indoors, kyoyakyo, large_breasts, monochrome, on_desk, original, pov, school_uniform, see-through, see-through_shirt, sitting, sitting_on_desk, skirt, smile, tomboy, underwear, yandere