Anime seriea with most doujinshi parody

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Any suggestions of an anime series that has many doujinshi's with dark tags like ntr, mindbreak etc..??
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Cat-ness NekoMancer
Puella Magi Madoka Magica everything I've read has either been yuri or NTR.

Bakamonogatari has a wonderful 12 part NTR, mindbreak, gangbang fuckfest

To Love Ru, Sword Art Online, Kantai Collection, Fate, Touhou Project

Any show with a harem aspect get lots of NTR worked in.
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Wow thank so much
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Kantai Collection also has wide array of doujins too, though it's more based on the online game instead of the anime.