Welcome Back For An Extracurricular Lesson, Sempai
| Created By | |
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| Status | Ended |
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| Original Name | 課外授業 ようこそ先輩 |
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| First Air Date | April 2, 1998 |
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| Last Air Date | February 26, 2016 |
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| Seasons | 19 |
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| Episodes | 604 |
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| Episode Runtime | 30min |
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| Language | Japanese |
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| Original Language | Japanese |
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| Production Countries | Japan |
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| Production Companies | NHK |
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| Networks | NHK |
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