Isekai de Tochi o Katte Noujou o Tsukurou

As our humble corporatist Itonami Norio is suddenly summoned to another world, it would look as if he'll be sent to a battlefield– he, however, holds no skill to speak of, and as he is deemed to be useless. He negotiates with The King and receives a plot of land — an empty, deserted plot of land, with no inhabitant in sight. Norio holds something he couldn't bring himself to tell anyone: The Master of Supremacy, a gift which will grant him the most comfortable of lives in this world. Hereby begins the Norio's colorful story — having a mermaid he fishes declare herself his wife, becoming neighbors with the Undead King, this is his busy but enjoyable life — and now a dragon appears ?!