try checking this thread to learn how to install vn game step by step.
about the game you want to install, it looks like you need to apply crack to be able to play it, fortunately there's uploader that has it, check this thread for the crack
Buying resources out of their own pockets, spending energy and effort, with almost no return so that everyone can enjoy the cultural and entertainment products of developed countries at almost zero cost walking in the dark to serve the light, they are real heroes