After the success of the School Fair concert, Haruki and Ogiso fall in love.  But the two of them still want to include Kazusa just like they have so far.  Kazusa answers by affirming her friendship with Setsuna, and on the surface things continue as before.  And before much time has passed at all, the second semester is over and winter break begins.  Setsuna and Kazusa drag Haruki on a Christmas hot springs vacation, and they enjoy their last big, fun, event.
And, in December, we realized how 
close graduation was getting.
Und im Dezember merkten wir, 
wie nah unser Abschluss rückte.
Y en diciembre, entendimos cuánto 
se acercaba la graduación.
Y en diciembre, nos dimos cuenta de 
lo cerca que estaba la graduación.
et la fin de nos années de lycée
 se rapprochait en ce mois de décembre.
E em dezembro eu percebi como
nossa formatura estava perto.