Rule 34 Dev - 1girls 2020 2020s :o armpits arms_up balancing bare_legs bare_shoulders barefoot bikini black_hair blue_bikini blue_eyes blue_swimsuit breasts cleavage concentration female hair_flower hair_ornament jiangpao leg_up light-skinned_female light_skin long_hair looking_at_viewer medium_breasts navel one_leg_up open_mouth saten_ruiko sketch solo standing swimsuit teenage_girl teenager to_aru_kagaku_no_railgun to_aru_majutsu_no_index toes white_background young|7543747952