Yuka lost her mother at a young age, and Hibiki came into her home as a stepmother, doting on Yuka like she was her own daughter and trying to bridge the gap between them. However, Yuka had almost no memories of her mother and found it difficult to recognize anyone as such. In reality, Hibiki was a sexually promiscuous bisexual who had been targeting Yuka even before marriage. Her affection that deviated from normalcy eventually…
