Any advice for an US citizen expat who wants to found while living abroad? (Tokyo, Japan) e.g. About whether to incorporate locally or in the U.S., and that so

Any advice for an US citizen expat who wants to found while living abroad? (Tokyo, Japan) e.g. About whether to incorporate locally or in the U.S., and that sort of thing -- anything unique to an expat situation. (This may be out of your wheelhouse, but I figured I'd ask.)