Anime seriea with most doujinshi parody

Any suggestions of an anime series that has many doujinshi's with dark tags like ntr, mindbreak etc..??

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.

Wow thank so much

Kantai Collection also has wide array of doujins too, though it's more based on the online game instead of the anime.