Throughout the summer, Mika and the mysterious caller continue to communicate, and agree to meet each other once school starts again.

Although hurt, Mika meets a college student named Yū at a gōkon, who becomes sympathetic to her situation.

The next year, she continues to move on from Hiro; however, on the day of the baby's death, Mika finds Nozomu at the grave.

Mika breaks up with Yū and finds Hiro in the hospital, diagnosed with cancer, with only three months left to live.

Mika is saddened by Hiro's death and tries to commit suicide, but is stopped by a flock of birds flying towards her.

Seven years later, she reflects on how her life had changed upon meeting Hiro, and that she is living happily with him and their baby in mind.

On April 19, 2007, a film for Koizora was green-lit and was to be directed by TBS director Natsuki Imai.

[3] Imai's previous works included television dramas Orange Days and Taiyou no Uta, and Koizora was her first experience directing a film.

[8] The premium edition contained a second disk with extra footage, interviews, and music videos of the theme songs.