That was not the basis of FreezerburnV's complaint, which was based on how it's done in Japanese, not English. So I don't believe SunShiranui's point is wrong. The fact that the plural of "kanji" is "kanji" in English does not establish a blanket rule that every word must be pluralized according to its language of origin. (And that is good, because pluralizing "cherry" would be a nightmare! It's an over-singularized form of the already-singular French "cherise.")