Satoru is a young man with a warm heart. He has a cat named Nana, but, due to circumstances, he can't raise cat Nana anymore. He travels with Nana to find a person who will take care of Nana. During his travels, he meets various people like his childhood friend and his first love. His unknown past and secret are revealed. Weeks at #1: 1 week Chart dates: February 5, 2012 Wiki link