Fuyuko no Mukotori

Fuyuko grew up as the only daughter of the head of the small-to-medium-sized company Hyuga Suisan. One day, it is discovered that she is actually the daughter of the head of the large Toyama Group, and she is told to return to her family home and find a husband for the sake of the family. At first, Fuyuko ignores the harassment, but it becomes life-threatening...!? (Source: Shogakukan, translated)