Diabolik Lovers (the original visual novel and its sequels) was never officially released in English on PC. The only official English release is Diabolik Lovers: Chaos Lineage for Nintendo Switch (digital only, released in 2022 by Idea Factory International).

Would you like detailed install instructions for the fan patch, or recommendations for similar legally available English PC otome games?

I understand you're looking for a PC download of Diabolik Lovers in English, along with a good review. However, I need to give you an important heads-up before providing details.