Pixy's adaptation of Taimanin Murasaki (or Hell Knight Ingrid), the third Taimanin Asagi game by Black Lilith. 
Said to share the same animators as those who worked on Aniyome wa Ijippari.

Based on the erotic game by Black Lilith & Anime Lilith. 
 
Asagi Igawa is a veteran Shinobu. After defeating an arch enemy a long time ago, she thought she could finally settle down. Yet, her arch enemy was revived from death through a pact made with the head demon in the city and swearing to take revenge on her by hurting those who are close to her. Her boyfriend, sister (a Shinobu) and her are part of the act being abused emotionally and... sexually...
 
(Source: Anime News Network)

Ziz's adaptation of Taimanin Murasaki (or Hell Knight Ingrid), the third Taimanin Asagi game by Black Lilith. 
 
Ingrid, a once feared and powerful Knight has fallen into the hands of a madman who has enslaved her body and mind. Forced to do the sexual bidding of her master with no ability to fight back she is broken and raped endlessly. 
 
(Source: hanime.tv)

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