Black Invade ~Combination Pleasure Tests~ CASE 4

On the theme of girls being experimented on by a mad scientist in his private lab.

Viral cyber-tentacles take a new captive heroine -- and the returning
ones from Black Invade CASES 1-3 -- into an electric world of psycho-pleasure.
The story evolves while the same familiar game system returns.

Each chapter has experiment options. At 100% completion you progress to the next chapter.

11 chapters

Situations
Captured - experimentation en route by train
Test 1 - robotic deflowering (with cross-section view)
Test 2 - robotic penetration (with cross-section view)
Brainwash 1 - brain storage activation
Rabbit - paizuri of 3 long-haired girls
Milking experiment
Brainwash 2 - fine tuning hypn*sis parameters
Lemming - organic interspecies breeding test with 1 red-haired girl
Lapis - electrical viral transmission test with 2 blue-haired girls
A failed escape - tight clothes/plugsuit bondage
Delusional experiment - viral interaction in the digisphere
Enforced cleaning - shower room cruelty