1girl, alternate_costume, blue_one-piece_swimsuit, blush, breast_hold, breasts, collarbone, covered_navel, frog_hair_ornament, gradient_background, green_eyes, green_hair, hair_between_eyes, hair_ornament, hair_tubes, kochiya_sanae, large_breasts, long_hair, looking_at_viewer, one-piece_swimsuit, ryokushiki_(midori-ya), school_swimsuit, sitting, snake_hair_ornament, swimsuit, touhou, white_background