In a quaint Tokyo café with an extraordinary secret, visitors can travel back in time—but only under strict rules. They must sit in a specific chair, cannot leave the café, and must return before their coffee gets cold. Through four interconnected stories, Toshikazu Kawaguchi explores themes of love, loss, and longing, as patrons use this magical opportunity to revisit pivotal moments in their lives. Each journey reveals the bittersweet beauty of human connections and the importance of living fully in the present. Poignant and heartwarming, this novel is a tender reflection on time and the choices that define us.