We get introduced to Hiroko Seto. She’s a pianist, mother, and she’s known Kousei since he was a baby.
There are two interesting discussions. One is about heroes and how we put them up on pedestals but it can be awkward when they are human because people aren’t perfect.
Also, the idea of the journey. When his fellow competitor demands to know what he’s been doing this whole time and criticizing his sloppiness, Kousei points out that he gave it his all and further that they are still in the middle of their journey.