1girl, 1other, ?, arknights, bad_pixiv_id, bare_shoulders, black_jacket, breasts, cellphone, ch'en_(arknights), doctor_(arknights), dragon_horns, grey_background, hair_between_eyes, holding, holding_phone, horns, jacket, kanta_(kanta_077), low_twintails, necktie, off_shoulder, open_clothes, open_jacket, phone, shirt, simple_background, sleeveless, sleeveless_shirt, smartphone, solo_focus, twintails, upper_body, white_shirt, yellow_necktie