Ruby text functionality/Publisher-like formatting

I use Publisher to create workbooks for students learning Japanese. Word is not a suitable replacement because it has ridiculous formatting issues. PowerPoint has better functionality because you can control placement of text and images and the pages are discrete. But there is no way to use Ruby text (phonetic guide) in PowerPoint. Can it be enabled in Powerpoint? I asked a support person and they told me to copy the sentence from Word to PowerPoint but that doesn't work. 

Alternatively, is there a way to make Word function like Publisher, so each page is a discrete entity and when I add something, it doesn't muck up the formatting on every other page or push things to another page?