Thread:Sarutobii2/@comment-27797856-20160416151047/@comment-1251315-20160416153409

It might be possible (don't get your hopes up though). See if anything on the Wikipedia page matches what you want. Note that anything there must be done manually with the appropriate tags (aka I'm not making it automatic through any templates), and you should be aware that using them does not work on all browsers because it's such a niche area of the internet. Therefore, someone using a browser that doesn't render the output of furigana properly will just see a mangled mess of characters, creating inconsistent experiences.

According to this page though, Furigana can be used above the content (which I would prefer over putting it on the side) and it's probably the only implementation of the tag that is supported.

Lengthening the page with additional text, like has been done on the infoboxes, is not very useful however: it's supposed to be a reading aid, and the current implementation just makes it look it's part of the real name. It might not have been intentional, but anyone who doesn't know how to read Japanese text will assume this (and that'll be a large proportion of readers).