It is possible the title is being confused with a localized translation of a Josei or Seinen manga, which Rei Kimura does not typically write. Themes in Rei Kimura's Genuine Work
In her final public comment on the matter (for now), Rei posted a photograph of her and Kazuo planting a persimmon tree in the garden. The caption read:
Rei’s keyword is not just a viral hook. It is a social movement. It represents the daughters-in-law who have found a true ally in the least expected place: the aging patriarch. It represents the fathers-in-law who reject toxic masculinity and choose empathy over authority.
Kimura Rei, 28, is not the typical J-drama heroine. While she has appeared in supporting roles in shows like Midnight Diner and What Did You Eat Yesterday? , her fame largely stems from her candid online essays about marriage, in-law relationships, and mental health. Unlike the polished, passive archetype of the traditional Japanese yome (daughter-in-law), Rei is blunt, introspective, and unafraid of discord.
In many of Kimura’s works, the female protagonist is often depicted as a caged bird, trapped in a marriage defined by emotional neglect or the suffocating expectations of being a "good wife." The husband is frequently absent—physically, emotionally, or intellectually. He represents the status quo, a life lived in grayscale.
If you are looking for the emotional depth often found in Kimura's writing, her actual books focus on: