Main story Release order

Part 1HAPPY☆LESSON (TV)TV · 2002

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Part 2 · Current titleHAPPY☆LESSON: ADVANCETV · 2003

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Movies, specials & related stories Release order

OVAHAPPY☆LESSONOVA · 2001

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SpecialHAPPY☆LESSON: Hoka Hoka★Kanna to Futari KiriSpecial · 2002

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OVAHAPPY☆LESSON ADVANCE: Bau Bau★Kanna no X'mas SoudouOVA · 2004

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OVAHAPPY☆LESSON: THE FINALOVA · 2004

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