Is this Let's Buy the Land and Cultivate It in a Different World...?
Itonami Noria was summoned into another world. However, he did not possess any “skills” which any inhabitant of the other world all held. Evaluated as useless, he was casted out to the uninhabited land. Although appearing to lack any skills at first glance, Norio actually had the special gift “Ultimate Supporter”. Seeking a sense of adventure in another world, Itonami Noria christened himself as Kidan, and decides to cultivate the land. With his ability, “Ultimate Supporter”, he is able to make use to anything in his hand to maximum efficiency, gradually cultivating the land for use. One day, while fishing at the seaside, he caught a beautiful mermaid! She names herself as Pratty, and announces that she shall become his wife for catching her—!?
A Japanese 'corporate drone' is summoned to a kingdom in another world, but is assessed as having no skill. Since they can't send him back and don't know what else to do with him, the King agrees to his request to be given a plot of land where he can live out the rest of his days.
When he arrives at the plot of land, he decides to build his own kingdom there and starts ploughing the land to grow crops. He also goes fishing in a lake he finds there and catches a mermaid, who insists he must take responsibility for having done so and marry her.