Mitsuha Yamano lost her family young and came out of it with a hard, practical view of money. A fall from a cliff drops her into a fantasy world where wolves nearly finish the job, and the panic that saves her also shows her what she can now do: step between that world and modern Japan whenever she likes. Rather than take up heroics, Mitsuha starts trading, buying modern goods on one side and selling on the other, with eighty thousand gold as the target.