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 know a lot of guys who've said 
that and ended up regretting it.
Das haben schon einige Leute gesagt 
und es später bereut.
Sé que muchos de ustedes dijeron eso 
antes y terminaron lamentándolo.
Conozco a unos cuantos que al final 
se arrepintieron de decir eso.
Je connais plein de gens qui ont fait ça
 et qui s’en sont mordu les doigts.
Conheço vários caras que ficaram de
moleza e acabaram se arrependendo.