Rule 34 Dev - 1girls 2020s 2023 bare_shoulders blush brown_eyes brown_hair brunette collarbone competition_swimsuit female gradient_background hi_res looking_at_viewer matching_hair/eyes misaka_mikoto one-piece_swimsuit open_mouth school_swimsuit schoolgirl short_hair solo swimsuit tabu teenage_girl teenager to_aru_kagaku_no_railgun to_aru_majutsu_no_index tokiwadai_school_swimsuit upper_body young|9362998856