Mature Anime List | The Best Adult Anime of All Time - The best mature
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20 of the Best Mature Anime of All Time. Anime aimed at teens is a lot of fun. But anime aimed at an older crowd is on a whole other level! For those of you looking for anime that is a bit more mature, like seinen anime, here's a list of the best adult anime of all time. What is the best anime series for adults to watch? Vote for your favorites on the anime list below, but only if you've actually seen the series.