Angel of Darkness 4 (1996)This time around, the demon is trapped inside sexy but wholesome schoolgirl Izumi, but is unable to get up to its usual tricks (rampant orifice invasion) thanks to the crucifix that she wears around her neck. Out to locate and destroy the monster are a nun and a priest, but their efforts are hampered by Izumi's evil protector Sakiko, who does her best to help the girl realise her true tentacle-thrashing potential (and, in a Carrie-style side story, also settle the score with a group of nasty school bullies who have been making Izumi's life hell).
Skyscraper Hunting (1991)The ASH (Abnormal Species Humanoid) first appeared in the beginning of the 1980s. They looked like humans, but they weren't. The ASH can be identified by a pulsating appendage on their back; it resembles an embossed root clutching the spine. These humanoid creatures have the power to destroy telepathically via a deadly impulse which hemorrhages brain cells. Their goal is to populate the planet via random sexual contact and then take control. There are special police units who fight the ASH. This top secret organization is called The Society For Environment Protection and its agents are called psychosists
Angel of Darkness 3 (1996)Manami, the sole survivor of Angel of Darkness 2, is rushed to hospital where she slips into a deep sleep. A priest correctly suspects that the demon (now referred to as an Injuu) is inside Manami's body, but by the time he is able to confirm his theory, the creature has already moved on. As before, the tentacled beastie passes from host to host (by thrusting its slimy appendages into its victims' orifices), eventually ending up inside goody-goody schoolgirl Fumie, who does her best 'Linda Blair' impersonation for a while, before the priest inevitably turns up to save the day.