In 1999, Hiroo graduated at age 25 from the Ministerial Training School in Japan, and one of the instructors encouraged him to serve in a foreign field.
सन्‌ 1999 में, जापान में रहनेवाले हरो नाम के एक भाई ने मंडली सेवक प्रशिक्षण स्कूल से तालीम ली ।