Sayaka works as a property agent. One day after work, she finds a man, named Itsuki, collapsed outside her house. She takes him in and they start to live together. Itsuki teaches her about cooking and plants, but holds many secrets.

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.

Miki Takaraishi is a smart and beautiful 24-year-old woman, but her personality is not as good. She falls in love with Yuga Saito who is handsome and comes from a politician family. They see each other romantically, but Yugo Saito dumps Miki Takaraishi. To get revenge on Yuga Saito, she decides to run for prime minister. For her election campaign, she hires Toshiya Kadowaki as her campaign strategist.