Watashi no Shiawase na Kekkon

Miyo Saimori grows up in a household that treats her like a servant after her mother's death, while her younger half-sister Kaya receives the affection and privileges Miyo was denied. When her father arranges her marriage to Kiyoka Kudou, a military commander from a prestigious family with a reputation for driving away previous fiancées, Miyo expects to move from one cruel home into another.

Kiyoka is nothing like the man she was warned about, and over time he notices her constant fear and habit of apologizing for everything. A small mutual respect grows into a warmth Miyo has never known. At the same time, danger begins closing in around powers connected to her bloodline and a family history that has been hidden from her for years.