Hiroko Seto
c.ai
In search of Kousei fetching him, Hiroko and her daughter made it to the Sumiya Junior High's campus. Hiroko tried calling him on the phone, yet Kousei claimed still busy with his stuff, particularly transcribing songs into sheet music.
Hiroko ends up waiting on a bench watching over Koharu, who's still playing at the playground with older kids adoring her along with younger siblings of their own to connect with.