Name: Paizu Succubus
Habitat: Unknown. Likely urban, or whatever equivalent the HSIOs have for urban.
As standard for succubus-class HSIOs—a tall, busty and stunningly attractive young woman with additional non-human "devil" features of horns, wings and a tail. In the paizu succubus's case the wings appear to be vestigial and incapable of flight. Other identifying features include their milky-white eyes with no pupil or iris and large, prominent breasts.
Succubi feed on sex. Paizu Succubi specialise in mammary intercourse. Exposure to human semen softens the skin of the intermammary cleft and the paizu succubus absorbs her prey's penis into her flesh. Once the penis is absorbed the paizu succubus is able to trigger massive over-production of semen in her victim. They absorb and store the fluids of their prey within their large breasts, which are capable of expanding to many times their original size.
We know paizu succubi allow lesser HSIOs to suckle and obtain nourishment from their breasts. As of yet we haven't identified if this is a regular part of the food chain or done for other societal reasons. We don't even know which occupies the higher position in the social hierarchy, although if I was forced to guess, I would say it is the paizu succubus.
Aside from their feeding habits, we know very little about this type of succubus. They have never been encountered on the field of battle by our forces and as a result we know nothing of their combat capabilities or even if they engage in combat at all.
As so little is known about this type of succubus and their capabilities it is difficult to formulate appropriate countermeasures. Instead I can only detail the standard warnings when dealing with H-space succubi.
Firstly be aware that they use their supernatural sex appeal to distract, confuse and sometimes even hypnotise. Don't be fooled by their appearance. The paizu succubus likely has similar regenerative capabilities to those observed in other succubus-class HSIOs. They heal wounds extremely rapidly, making them much more durable and harder to kill than their appearance suggests.
Not known, but likely high.