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.
I'm amazed your voice doesn't get 
hoarse after all that singing.
Ich bin erstaunt, dass deine Stimme 
nach all dem Singen nicht heiser ist.
Me sorprende que no te quedaras 
disfónica después de cantar tanto.
Me sorprende que no te hayas 
quedado afónica después de cantar tanto.
Incrível você não ficar rouca
depois de cantar tanto.