The Marquis’s Orphan: Building Infrastructure in a Time of Chaos

[Strong female lead farming + hardcore tactics + ancient infrastructure-building + cool-headed heroine + sharp-tongued AI + ensemble cast with no romance + satisfying power fantasy]

A starship captain dies in battle, transmigrates, and wakes up as the legitimate daughter of a marquis.

Sent to a frontier city as a bride to bring good fortune, she finds the lord dead, three hundred battered soldiers, and a barbarian invasion looming at any moment.

Everyone says she won't survive the winter.

But she says, “I'll put revenge on the books for now.”