・The statues of the four young ambassadors of the Tensho embassy to Europe were erected in 1982 to commemorate the 400th anniversary of their dispatch to Rome in 1582.
・The plan to send an embassy to Rome was developed mainly by Father Valignano, who was responsible for missionary work in Japan, and four boys were selected to be dispatched on behalf of the three Christian feudal lords of Omura Sumitada, Arima Harunobu, and Otomo Sorin.
・The heads of the embassy were Ito Mancio (a 15-year-old envoy of Otomo Sorin) and Chijiwa Miguel (a 14-year-old envoy of Arima Harunobu), and the deputy heads were Hara Martinho (a 13-year-old envoy, from Hasami, of Omura Sumitada) and Nakaura Jurião (a 15-year-old envoy from Nakaura, Saikai City).
・These boys arrived in Lisbon, Portugal via Macau, across the Indian Ocean, two-and-a-half years after leaving Nagasaki. It is said that they received the greatest-ever welcome in Rome.
・They were allowed to meet with the Pope and handed him a letter on behalf of the three Christian feudal lords.
・They returned to Nagasaki in 1590 after receiving a welcome in various places in Northern Italy and learning about European knowledge.
・When they returned to Japan, they found that Christianity was now prohibited in the nation. Although they were forced to undergo various hardships and oppression, the knowledge and articles they brought back from Europe had significant influences on Japanese culture.