"I'll save the world of harem - Isekai Harem Saver -" is a novel game in which the protagonist "Daigo", saves the world of harem while encountering various incidents. This Bishojo Game originally released under the "Genyukyo" brand has been reworked for the "CS Novels" platform for players of all ages worldwide to enjoy. Businessman Daigo Igarashi suddenly had a stomachache while on fieldwork, and rushed into a restroom. At that moment, he hears cheers and a few screams. Daigo, who was in the restroom was suddenly summoned to an isekai. A world full of beautiful women...or rather, only women. Here every child born is female, and once every decade or so, they summon a man from another world to bear a descendent. As the only man in the world, the retention of the species depends on him. Can he save the world of harem?!