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2_tails absurd_res accessory anthro barefoot beach big_breasts bikini bikini_bottom bikini_top blue_body blue_eyes blue_fur blush breast_size_difference breasts canid canine clothed clothing cloud crossgender day echidna eulipotyphlan feet female ffm fighting_over_boy fox fur green_eyes group hair_accessory hairband half-closed_eyes heart_symbol hedgehog hi_res huge_breasts inflatable inner_tube knuckles_the_echidna larger_female male mammal michiyoshi miles_prower monotreme mtf_crossgender multi_tail narrowed_eyes outside pictographics purple_eyes red_body red_fur sand seaside sega size_difference smaller_male smile sonic_the_hedgehog sonic_the_hedgehog_(series)speech_bubble swimming_trunks swimwear tail toony topless trio tug_of_war two-piece_swimsuit water wide_hips