On Wednesday we got Tatsuki's U.S. passport in the mail. We applied for the passport about 3 weeks ago. We went to the U.S. Consulate in Osaka to apply. We needed to do a lot of paperwork and pay money. Because he is young, the passport is only good for 5 years.
He also got his US Birth Certificate, which proves that he is an American citizen. Tatsuki is also a Japanese citizen, so next we will get his Japanese passport. But we can get that one here in Okayama, so it is much easier.