Keiichiro Hirano's award-winning novel, 'A Man,' is a profound exploration of identity, memory, and the intricate concept of self. The story follows a lawyer, Akira Kido, tasked with investigating the true background of a man who died in an accident. This man, Daisuke, was married to one of Kido's former clients, Rie. As Kido delves deeper, he uncovers a shocking revelation: Daisuke was living under an assumed identity, having stolen the life of another. The narrative masterfully navigates the legal and philosophical implications of what it means to truly know someone, and whether identity is defined by name, past, or the love shared. Hirano challenges readers to consider the profound implications of living a life built on a lie and the resilience of the human spirit in confronting uncomfortable truths. It's a compelling legal thriller fused with deep psychological insight.