The NH-33S is a limited upgrade to the NH-33 (Tennyo) replacement for the NH-29 used by the Star Army of Yamatai, it became available in YE 33.
GM permission is required to upgrade to the S variant.
The NH-33S looks like a typical NH-33.
Skin-based, holographic optic camouflage: This capability expands on the ability to produce holograms in close proximity to their skins; this however, only allows the nekos to hide their bodies (any garment actually worn still remains visible) by holographically showing the image on the opposite facing of the body - effectively turning transparent.
Seeing that clothing does impede the camouflage capability, a good number of nekos resort to being naked and using their holographic skin to cover them with illusory clothing. Fixed holography like clothing seems easier to maintain than transparency and can be maintained indefinitely as long as the neko remains conscious and clear headed. The 'transparency' feature is harder to maintain and the neko can't keep it up along with any strenuous activities other than focusing on remaining unseen (nekos can't effectively fight while invisible).
Light sensitive tactile sensors: Another advantage nekos have is the capability to feel light on their skin - actually allowing them to 'see' without the use of eyes (though actual definition and clarity compared to eyes could be in question).
With the advent of the Second Mishhuvurthyar War, Ketsurui Zaibatsu added a contingency for infection. A small gland was added that stores a unique set of femtomachines. Upon detection of the paralytic drug the NMX parasite injects, this gland releases its contents. The femtomachines automatically seek-out the parasite. Once they find it they attack it, creating more of themselves as they tear it apart, until it is gone. After the parasite is destroyed they search the blood stream for any traces of the parasite. After twenty-four hours they self destruct. The gland reproduces a new batch within twelve hours of releasing a batch.