鬼畜難易度の街造りゲーの世界に転生してしまった…　領主として襲撃者たちを撃退しているうちに人が集まりやがて街は大都市に発展する　そして俺の周りには可愛い女の子たちが集まりハーレムを形成する (Associated Names)

The main character, Yuri, was born as the eldest son of a duke. At first, he is treated as a legitimate son, but his situation changes when his father’s wife gives birth to his half-brother. His half-brother, the son of his father’s wife, was chosen as the rightful heir, while he, the son of a…