1girl, bed, bed_sheet, blunt_bangs, blush, breasts, cellphone, flower, greyscale, hand_fan, indoors, katana, kimetsu_no_yaiba, long_hair, looking_at_viewer, looking_down, lying, medium_breasts, monochrome, mr_tangsuyuk, navel, on_back, on_bed, panties, phone, pillow, school_uniform, solo, sword, thighs, tsuyuri_kanao, underwear, weapon, white_panties