Liliaris, the daughter of a marquis, was born with the light magic attribute—considered a useless “failure” attribute. On her way to the duke’s territory for marriage, her carriage falls off a cliff. In the moment before death, she recalls her past life as an otaku from Japan. Though she barely survives, she awakens to find herself already in the duke’s household… and somehow already married to a husband she has never even met!? To make things worse, her new husband proposes a “white marriage”—three years without intimacy—after which they will divorce. Determined to stand on her own after the divorce, Liliaris resolves to raise the status of light magic and reform the duke’s territory. When she goes to register as an adventurer, she encounters the guild master, Red, and her new path begins――!!