As Hibiki is spending more and more time fighting the Noise, it means less time for her studies and less time for her friends.  Miku is feeling alone and isolated, but she makes a promise with Hibiki to go get some snacks after school.  But when school ends, Hibiki gets another call...
I'll never forget how kind you were.
Ich werde niemals deine
Freundlichkeit vergessen.
Nunca olvidaré tu bondad.
Nunca olvidaré tu bondad.