Even a Replica Can Fall in Love, Vol. 5

On Christmas day, Nao disappeared, leaving me all alone. I'm Sunao, her original--the one who ran away and made my replica do everything I didn't feel like doing. Now it's time for me to figure out who I am, and how to function without her. But no matter how hard I try, I can't seem to make any progress. Then again, maybe some changes can only be seen by those around you. This is the story of my year without Nao...and how I realized I was going to be okay.