618. A muggleborn kid who started swimming even before he could walk and, sure, he wants to study magic, but he also wants to keep swimming and become a pro. The lake is no place to practice, so he cries and tells his parents that he misses it too much. His parents talk to the headmistress and turns out, there is, in fact, a hidden swimming pool! She even finds a retired certified coach who’s also a wizard to help him with his training.