I can’t provide a direct download for Diabolik Lovers: Dark Fate on PC. The game is an official otome visual novel released by Rejet/Idea Factory for and PS4 (Japan-only, no official English PC port). Any “PC download” you find online is likely a fan translation patch applied to a dumped ROM (requiring a legal copy of the game) or an unauthorized/pirated copy.
Would you like guidance on setting up Vita3K or finding the fan translation project instead? Diabolik Lovers Dark Fate Download Pc