While on a business trip to Kobe, Tsuneo Asai receives the news that his wife Eiko has died of a heart attack. Eiko had a heart condition so the news of her death wasn't totally unexpected. But the circumstances of her demise left Tsuneo, a softly-spoken government bureaucrat, perplexed. How did it come about that his wife - who was shy and withdrawn, and only left their house twice a week to go to haiku meetings - ended up dead in a small shop in a shady Tokyo neighbourhood?