The tag rising-of-the-shield-hero for the series "The Rising of the Shield Hero" currently has no synonym. So, can we add a synonym using the Japanese title "Tate no Yūsha no Nariagari", namely tate-no-yuusha-no-nariagari? I think this would be in line with the current policy on tagging.
Additionally, it might be good to rename the master tag to add the article "the" at the beginning, since the official title seems to include it, and we now have enough space to do so (the current English tag name uses precisely 25 characters, but we can now go up to 35 characters in tag names).