The phrase strings together several highly specific Japanese ACG (Anime, Comic, Games) and adult subculture tropes. Transformed into a readable concept, it translates to "An unholy ritual sacrificing a voluptuous mother and daughter to summon an evil god."

Establishing the close bond between the parent and child characters.

Given these components, the subject line seems to suggest a ritual or ceremony involving summoning, possibly with erotic or licentious elements, and including themes of parent and child, which could be interpreted in various ways, including metaphorically or as part of a narrative.

: Throughout history, various cultures, including Japan, have had rituals that might seem strange or taboo when viewed through a modern lens. These rituals often had specific cultural, religious, or societal roles.

In the world of doujinshi and eroge, the "Circle" (creator group) is a mark of quality. If you find a work you like, search for other "Jashin" or "Gishiki" works by that same group.

: For many fans, "better" is defined by the studio. In the realm of dark ritual animation, studios like Pink Pineapple or Bunnywalker are often cited for having higher frame rates and more detailed character designs compared to lower-budget productions.