In 1582 Alessandro Valignano, the Visitor to the Jesuit mission in the East Indies, sent four Japanese boys to Europe. Until the arrival of the embassy in Europe, the Euro-Japanese encounter had been almost exclusively one way: Europeans going to Japan. This book is an account of their travels, their long journeys out and back, and the 20 months in Europe being received by popes and kings. It was published in Macao in 1590 with the title De Missione Legatorvm Iaponensium ad Romanum curiam. The present edition is the first complete version of this rich, complex and impressive work to appear