[Crossover] Good Fortune in Battle

Ji Jiang is a weak woman with a combat ability of only five. Without any martial prowess, all she has is her brains.

To live a good life, she takes matters into her own hands.

This is the story of a girl from the Warring States era who becomes a daimyo after starting out as a young lord, then wreaks havoc in the name of peace.

The male lead might be one of the characters listed in the supporting cast.