After school, Mio is on the school roof drawing something and Misaki arrives on the roof and looks out toward the sunset despite being blind. Mio tries to converse with her via her notepad due to her being mute, but since Misaki cannot see, Misaki must resort to feeling Mio's lips as she voices the words. Köhei, who Mio had met as a child, returns one day, and he and Mio begin to hang out. At the same time, Misaki meets Köhei and they also hang out together in this time...