aaaninja anal anal_sex balls bikini bikini_aside black_eyes black_hair bondage bound brown_eyes brown_hair censored clenched_teeth clitoris crying dark-skinned_male dark_skin female interracial kamijou_touma lightning male misaka_mikoto netorare penetration penis pubic_hair pussy sex sling_bikini sling_bikini_aside squirting straight tears tied_up tight_fit to_aru_kagaku_no_railgun to_aru_majutsu_no_index urethra vein veiny_penis wide_eyed