1girl, aroused, blush, bow, bowtie, bra, bra_peek, breasts, cleavage, clothes_lift, collarbone, greyscale, hair_between_eyes, hand_on_floor, heavy_breathing, hoshizora_rin, itsuki_kuro, jacket, looking_to_the_side, loose_bowtie, loose_clothes, love_live!, love_live!_school_idol_project, monochrome, on_floor, otonokizaka_school_uniform, parted_lips, partially_unbuttoned, partially_undressed, school_uniform, short_hair, sitting, sketch, skirt, skirt_lift, small_breasts, solo, sweat, underwear, unworn_jacket, white_background