In the Taishou era, Kazunari Kyougoku leads a thriving trading company with unmatched negotiation skills and a unique ability to hear people's thoughts. Seeking to enhance his business further, he proposes to Nana Suwabe, a speechless noblewoman. Expecting to easily grasp her thoughts, Kazunari is surprised when he finds himself unable to hear her inner voice. Accustomed to deciphering others' intentions, Kazunari embarks on a journey to comprehend his fiancee's unspoken emotions and forge a deeper connection for a shared future.