1girl, ahoge, arknights, bad_pixiv_id, blush, coat, collarbone, cowboy_shot, exhibitionism, green_eyes, grey_hair, hair_ornament, hairpin, hallway, heads-up_display, jokebag, korean_text, looking_down, medium_hair, ponytail, public_indecency, recording, scene_(arknights), standing, sweatdrop, unbuttoning, undressing