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Specials
2002 | 10 Episodes
Season 0 of Happy Lesson premiered on December 13, 2002.
Happy Lesson
2002 | 13 Episodes
Season 1 of Happy Lesson premiered on April 1, 2002.
Happy Lesson Advance
2003 | 13 Episodes
Season 2 of Happy Lesson premiered on July 7, 2003.
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