1girl, ahoge, arknights, breasts, greyscale, hair_between_eyes, hair_ornament, hairclip, head_tilt, indoors, lappland_(arknights), long_hair, looking_at_viewer, medium_breasts, meng_ziya, monochrome, oripathy_lesion_(arknights), parted_lips, sitting, skirt, smile, solo, tank_top