Professor Kevin M. Doak of Georgetown University has now translated Sono Ayako's Kiseki ('Miracles'), a book which focuses on St Maximilian Kolbe's canonisation. It will, I hope, be available in the not too distant future.
However, while we wait Professor Doak has edited another excellent book, Xavier's Legacies: Catholicism in Modern Japanese Culture which has a chapter on Sono Ayako. If you want a flavour read his fascinating introduction via the previous link.
It's not just Japan that is getting a little more exposure: China is beginning to create ripples too. One of Fan Wen's novels is due out in French translation in a fortnight's time.
And, I happened to notice, Pope Francis, who taught literature for a while, quoted Leon Bloy in his inaugural mass in the Sistine Chapel today.