Either 3, 4 or 5, depends on how you count.
- There is the purity route with two options at the end.
- There is the middle ground route without options.
- There is the maximum corruption route with two options at the end, but one of those leads to the same conclusion as the middle ground ending.
Which one of those 3 main routes you get depends on whether you consent or refuse to partake in the BDSM play scenes with Niifa.