2boys, abs, bara, black_hair, black_male_swimwear, brown_hair, free!, goggles, holding, holding_goggles, jammers, large_pectorals, looking_at_another, male_focus, male_swimwear, multiple_boys, muscular, muscular_male, navel, nipples, pectorals, short_hair, smile, tachibana_makoto, topless_male, yamazaki_sousuke, zac_kan