After hearing Kōsei and Nagi’s duet, Kaori opts for a risky surgery that will end her life if it fails, all so that she can perform with Kōsei one more time. Even as she verbally exhorts Kōsei, who’s begun practicing for his next competition, to work harder, she herself is undergoing rehabilitation so that she can once again take the stage.
"You should enjoy the little detours. To the fullest. Because that's where you'll find the things more important than what you want." ~Ging Freecss