Is Tales of Symphonia The Animation: Kratos-sensei no Private Lesson hentai?
No
Rated G (All Ages) on MyAnimeList and not tagged as Hentai.

Special · 2007 · 1 episodes · G - All Ages
Comedy, School
A special bonus animation included in the first volume of the Tales of Symphonia DVD. Lloyd and Collete talk about the special DVD editions, and Professor Kratos gives a summary of the ancient history of the world in Tales of Symphonia.
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