The phrase "Jashin Shoukan Inran Kyonyuu Oyako Ikenie Gishiki" translates to a ritual or practice that involves elements of spirituality, possibly Shinto or another form of Japanese spirituality. The practice seems to involve a form of invocation or summoning.
Jashin Shoukan, also known as "Evil God Summoning," refers to a subcultural phenomenon in Japan that involves the summoning and worship of dark or malevolent deities. This practice is often associated with occultism, esotericism, and ritual magic. Inran Kyonyuu Oyako Ikenie Gishiki, which roughly translates to "Depraved and Abnormal Parent-Child Incest Ritual," is a ritualistic practice that has been linked to Jashin Shoukan.
: Developed by DwarfSoft as a single-player adventure visual novel for the PC. Anime Adaptation (2021)
" (邪娠娼館―淫乱巨乳母娘生贄儀式―) refers to an adult-oriented Japanese media franchise that spans visual novels and anime. The title translates roughly to "Wicked Whorehouse: Busty Mother/Daughter Sacrifice Ritual". Overview and Origin