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