Bi-shonen Swimming animation.
Original story is actually from the novel that got an award from the 2nd Kyoto Animation award - "High Speed". So, I'm guessing this is a way that Kyoto will create their original series I guess.
...Other than Miyano, no idea who they are. I guess this is Kyoto being Kyoto again.
Anyway, this is MUST WATCH. So excited kyoto showing their hidden card now.