Until I Meet September's Love Episode 1

Shiori Kitamura just moved to a new apartment. She works at a company. Susumu Hirano lives next door to her. He aspires to become a novelist. One evening Shiori Kitamura hears a mans voice coming through her wall saying I am in the future 1 year later. The voices asks to trail Susumu Hirano. She is unable to hear the mans voice anymore. To solve the mystery ...