Rakuen Danshi: Dare mo Shiranai Mou Hitotsu no Rakuen

After ten years away, the protagonist returns to her hometown during her second year of high school—shy and uncertain as ever. A childhood friend hands her unusual software stocked with hundreds of thousands of prepared conversation patterns, promising to carry her through any social situation. She leans on it heavily at first, but as connections quietly form, she begins to wonder whether the crutch she relied on is still the one doing the talking.