Outside the vista windows of the Hotel New Otani's Garden Lounge cafe in Tokyo, it's snowing, in March, and it suddenly feels like the spring flowers in the Japanese garden below may have popped too soon. David Mitchell wonders aloud what kind of flowers they are, before returning to our discussion.

The Bone Clocks, by David Mitchell.Sceptre, Fiction.

The British author of "Cloud Atlas" and "Number9dream" is in town for the Tokyo International Literary Festival, the first time he's been back in the country for seven years, and he's still somewhat jet-lagged.