What are the major prescriptive style guides for writing regular Japanese prose (as opposed to e.g. technical writing)?
I suspect that this question will have a fairly short list as an answer - if you were to ask the same about American English, you'd get the Chicago Manual of Style, the Associated Press Stylebook, the MLA Style Manual, and maybe a couple others at most (e.g. some might suggest The Elements of Style or the APA's style guide).
(The Japanese Wikipedia article スタイルガイド is strangely silent on Japanese style guides aside from a couple external links, though I suspect there is information I could find elsewhere - if only I knew what the style guides were called!)