Parody happy lesson
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[Kuroyuki (Kakyouin Chiroru)] Gohoushi Club 4 Happy Lesson hen Full Color ban (Happy Lesson) [Digital]
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Happy Lesson - Tanoshi
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(C74) [Geiwamiwosukuu!! (Karura Syou, Tachi Tsubaki)] Type-G GMS (Various)
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(C65) [Kuroyuki (Kakyouin Chiroru)] Gohoushi Club 04 (Happy Lesson)