Yachi Hitoka was once lived in Tokyo, but suddenly moved at Miyagi Prefecture, because her mother transferred there. At the age of 11, she's very stubborn to obey her mother. She wants to stay in Tokyo, she doesn't want to leave her friend. "After 5 years, meet me here. Meet me at Tokyo." one of her old friend said. After 5 years, did Yachi really meet her old friend? Yes? No? Let's see.