Ever since the school trip, Kazusa hasn't come to school. Haruki tells himself that it's because she's practicing for the upcoming recital, but part of him is still struggling over what's happened. And even when he's with Setsuna that doesn't go away. He finally invites Ogiso to a birthday party, with just the two of them, to finally come to terms with his feelings. But he doesn't know that Kazusa is making a big decisions of her own...
Why don't we celebrate your 
birthday with just the two of us?
Wieso feiern wir deinen Geburtstag 
nicht nur zu zweit?
¿Por qué no celebramos tu 
cumpleaños los dos solos?
¿Por qué no celebramos tu 
cumpleaños los dos solos?
Et si on passait ton anniversaire 
en tête à tête ?
Que tal a gente comemorar
seu aniversário só nós dois?