After a heartbreaking romance ends, Kakeru Nishizawa begins attending matchmaking events and meets the humble and considerate Mami Sakaniwa. Even after a year of dating, he struggles to commit to marriage. One day, upon learning that Mami is being stalked, Kakeru proposes to protect her — but she suddenly disappears. In his search for Mami, Kakeru visits her friends and former lovers, gradually uncovering a past filled with unexpected secrets and lies. Perhaps the woman he fell in love with was never as real as he believed…