Talk:Japanese (Age of Empires III)/@comment-201.230.113.152-20101128082405/@comment-67.213.218.74-20150214042416

You have to have Monastery and research Reiki upgrade. This upgrade lets your explorer (Ikko-Ikki) to be able to heal. Research this upgrade as soon as you have Monastery built. I'd say Reiki is a mandatory upgrade early game because then your explorers would have great survivability.