Adult PC Game: Risa and the Succubus Grimoire Final by Yumenamakonn Archive

Overview:
Risa had been working as a treasure hunter, and recently got info on the treasure
of the great demon lord in the Malheim district.
She wished to find a grand treasure and live out a lazy life, so she made her way there.
However, the men of the town had all been turned into beasts in heat by the power of
the "Succubus Grimoire" book of sorcery...​