2girls, bikini, blue_eyes, breasts, brown_eyes, closed_mouth, crossed_bangs, girls'_frontline, grey_hair, hair_between_eyes, kotoha_(kotoha65), mechanical_arms, micro_bikini, multicolored_hair, multiple_girls, one_side_up, open_mouth, pink_hair, scar, scar_across_eye, scar_on_face, single_mechanical_arm, sitting, small_breasts, st_ar-15_(girls'_frontline), st_ar-15_(mod3)_(girls'_frontline), streaked_hair, swimsuit, ump45_(girls'_frontline), ump45_(mod3)_(girls'_frontline), white_bikini