New HS2 concept guys... imagine being able to create Koikatsu type characters inside Honey Select 2! Dumb idea? Great idea? Should PATHOS just design lawn mowers, and that lever you pull to get the fairy floss to spin?
These two character cards are 100% native working--and essentially teasers. Their faces are the main problem. Their mouth, teeth, and eyes are simply not scalable & still align/work correctly in an HS2 H-scene. HS2 native textures and shaders are also unsuitable for the Koikatsu look. Thus, you need a custom HS2 head mesh & textures/shader, designed to make an HS2 girl have the same proportional attributes as Koikatsu girls. This is being worked out right now. In the meantime, these "versions" of that Koikatsu custom mod work fairly well OOTB--and will give you a feel for the mod before its done.
In case you are not familiar with Koikatsu, just imagine any Japanese hentai comic you've ever seen become colorized and animated for you to explore/interact in virtually.