1girl, arknights, arm_up, bare_arms, bare_shoulders, bikini, black_bikini, blue_hair, breasts, ch'en_(arknights), cleavage, closed_mouth, collarbone, dragon_horns, from_side, hand_in_own_hair, heart, hongtao_a, horns, long_hair, looking_at_viewer, looking_to_the_side, red_eyes, small_breasts, solo, swimsuit, v-shaped_eyebrows, white_background