John Taylor lives in quiet solitude, designing puzzles for a living, under the nom-de-plume of 'Ludwig'. When his identical twin, James, disappears off the face of the earth, John takes over his brother's identity in a quest to discover his whereabouts.

The story of James Garfield, who rose from obscurity to become America's 20th President — and Charles Guiteau, the man who assassinated him.

Happy nostalgia. Natsukashii tells the story of one night of remembering, as memories of a certain time, and a certain person, come flooding back.