Adult PC Game: Shinshoku -Zero- Inma no Ikenie by Touchable Archive

Maboroshiyume who had come to the ruins investigation to this world is, in the ancient experimental facility for the simulation of life evolution, had been wanting to get the source of the magic.
And, by using the conveniently three sisters wandered, that advance the labyrinth of exploration.
Although did not can also open the door of the ruins in Maboroshiyume, apparently ruins to start in response to the organism that is suitable for the mother.
And three sisters of the second daughter-yang date will show the aptitude, sisters is that it is subjected to mating experiments with tentacles organisms are incorporated into the labyrinth.
Then, the three people were rescued by Maboroshiyume, of it, but events in ruins Komu think dream, positive day is called in ruins ......