My Happy Marriage

Miyo Saimori is the eldest daughter of the noble Saimori family, but as the un-Gifted daughter of her father's despised first wife, she's treated like a servant by her stepmother and half-sister. When escape comes in the form of being offered in marriage to the infamously cold Kiyoka Kudou, Miyo barely has enough left in her to hope, assuming that because she lacks Spirit-Sight she'll be rejected and die on the streets as her parents intended. But contrary to everyone's expectations, Miyo is not universally loathed, and her betrothal offers her the most precious chance of all: to learn to stop hating herself.