1girl >:) armor armpits bangs black_hair blush closed_mouth cloud crotch crotch_cannon day double_bun drill from_below glint haruyama_kazunori helmet ketsugou_shoujo_bongo-ko-san light_smile looking_to_the_side mecha_musume outdoors panties pantyshot pantyshot_(squatting) pincers red_eyes robot_girls_z short_hair sidelocks sky smile solo spread_legs squatting swept_bangs turret underwear v-shaped_eyebrows weapon white_panties