Japanese Fonts Support For 

Adobe Reader X Font Packs enable you to display and interact with documents authored in languages other than those supported in your native Adobe Reader software. They are needed to correctly display a document when an author does not embed the appropriate font into the document. They are also needed when the author does embed the font, but the reader of the document wishes to interact in some way with its content, for example, by collaborating, commenting, or filling out forms.