Team up with the heroines and escape from another world! One day, your childhood friend Sakura brings a mysterious package to your house. The moment you open it, you’re transported to a different world created by a succubus! Among the many men and women pulled into this realm, a succubus appears and declares that the only way to escape is to conquer the dungeon. She also reveals that she has engraved a “lewd crest” on every woman trapped here. If you don’t escape quickly, the lewd crest will run wild, driving the women into uncontrollable lust until they eventually turn into succubi… To prevent Sakura from becoming a succubus, the protagonist sets out to clear the dungeon!