haru joins iwatobi swim team since he always did it as a kid, he joins his friends once again to get the team back together, when Rin returns from Australia he brings along a new friend that everyone remembers but who was also harus crush through out school but Sousuke didn't really know harus feelings but through the swim team they connect and try to make a great relationship even if it was a surprise to the whole swim team that they were gay