arknights bare_shoulders bent_over bikini black_hair blue_sky breasts cleavage closed_mouth collarbone colored_skin day dragon_horns dusk_(arknights) gradient_hair gradient_skin green_hair green_skin hair_over_one_eye hand_on_own_knee highres horns looking_at_viewer medium_breasts multicolored_hair orange_eyes outdoors pur_bebi red_bikini red_ribbon ribbon side-tie_bikini_bottom sky swimsuit