You can find various versions and notes for the Romanized edition on these platforms:
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This is the most important academic reason. If you study only the Romanized version, you are delaying the inevitable. Real Japanese (menus, signs, manga, news) does not use Romaji. By using Romaji as a crutch, you stunt your ability to recognize Hiragana and Katakana. You will be illiterate in Japan. You can find various versions and notes for