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Japan - Les Pennacs: Un Air de Famille
That's a little weird
I suspect it is not just for Japan. For example Allociné uses "Les Pennac(s): Un Air de Famille" as title.
Belgium - Flair de Famille: Rouge Sang
That's just the old main titles, from the first episode, I doubt that the name was used for the whole series, probably just an error in IMDb.