While there is no record of a book with that exact title by the author Rei Kimura
According to Rei, she met her husband, Taro, through a mutual friend, and they got married after a whirlwind romance. Initially, everything seemed perfect, and Rei was excited to start her new life with Taro. However, as time passed, she began to feel a growing sense of discomfort and disconnection from her husband.
One day, Rei turned to Taro and said, "I love my father-in-law more than my own father." Taro was taken aback, but as he thought about it, he understood what she meant. For Rei, Hiroshi represented a sense of stability and security, a feeling of being truly seen and heard. Rei Kimura I Love My Father In Law More Than My... Fix
But what really gets me is...
She had loved her husband, Tak, once. He was bright and sharp-edged, a corporate prodigy who saw life as a series of acquisitions. But Kenji—Kenji was the quiet pond beside the rushing river. A retired calligraphy master, he moved through the world with a patience that felt like a language Rei’s own frantic heart had been trying to learn since childhood. While there is no record of a book
If you were thinking of a specific Rei Kimura book, it might be The Samurai's Secret
If you are looking to fix or "put together" a story with this theme, here is a narrative structure based on common tropes in this genre: The Betrayal One day, Rei turned to Taro and said,
As they sat down to dinner with Hiroshi, Rei turned to him and said, "I just want you to know how much you mean to me. You're more than just my father-in-law - you're a true friend and mentor." Hiroshi smiled, his eyes shining with tears, and said, "I feel the same way about you, Rei. You're like a daughter to me."