What to read after Journey of a Heart?

This is the story of a thirty-four-year-old man who has a heart transplant. He hears rumors that the heart he received belonged to a young woman who died in a traffic accident. He’s intrigued and decides to investigate. He wants to find out more about the woman and her story. He gets caught up in the quest and becomes obsessed by it.
Despite the necessary anonymity and confidentiality regarding organ donors, he manages, through subtle inquiry and unlimited patience, to find her parents. He also discovers the cemetery where she’s buried as well as her photo, her name―Irene―and her age at death―twenty-two. A surreal connection takes place between him and the deceased, and an impossible love story is born. He begins to have feelings for her. After all, it’s her heart beating in his chest. Things become complicated when he learns she has a twin sister living somewhere in Africa, working with an NGO as a nurse. He decides to leave his life behind and go in search of Irene’s twin. Once he finds her, their love, tinged with drama and passion, is both powerful and fragile. These unusual ingredients combine to offer them an adventure full of torment involving both stormy and sunny weather.