I thought it was impossible, but someone has figured out how to write maru-ma in text!
Really, I figured there should be a way–it’s common to put a circle (maru) around a character. But all the KKM websites had it as a graphic, so that led me to believe it was impossible. Glad to know it’s not; I can now write Kyou Kara Maou properly in Japanese.
Edit: Unfortunately I can’t do it here, since it seems the maru is in UTF-8 and I foolishly set this blog to Shift-JIS back in the day. Someday I want to change it to UTF-8…but when I do I will have to edit all posts that have Japanese text in them >_< Edit, almost a year later: My blog is now UTF-8, and the Japanese text seems to have transferred perfectly! Yay! Unfortunately the site that used to have the maru-ma on it now does not…