Things have developed with Sekai and Makoto. From the outside, it seems like Makoto is still involved with Kotonoha, however his relationship with Sekai has accelerated. While, Sekai knows its bad to keep lying like this, she can't turn away Makoto. Gradually, Makoto starts avoiding Kotonoha by not answering if phone...

Makoto hasn't told Kotonoha yet of his relationship with Sekai. However, one night Kotonoha bumps into Sekai outside of Makoto's apartment and an altercation goes down. And with that, begins the the school festival...

Christmas is coming around the corner, and although Makoto is dating Sekai, it seems as if he wants out of it. So it appears as if he is haphazardly getting himself involved in other relationships, despite his promise to Setsuna. Now things are going terribly wrong, as Kotonoha loses herself, Sekai finds out about Makoto's infidelity, Setsuna's move to France and most importantly a sudden change to her body...