One day, a mistaken call arrives at the apartment of Mitsugu Shirakawa, a third-year university student. The owner of the voice is talking while thinking that it is the man who broke up. A voice too attractive to tell a misunderstanding. What kind of woman is Aiko, the owner of the voice? Unbeknownst to him, Mitsugu began to feel a faint love for him after receiving frequent phone calls. A romance that started with a wrong phone call. A love story left behind by Mamoru Uchiyama, a talented manga artist who sadly passed away.