Let’s Buy the Land and Cultivate It in a Different World (Manga) Vol. 8

SELF HELP OR SELFISH?
Kidan possesses a gift called the Supreme Wielder and was summoned to another world. Together with the mermaid Plattie and the dragon Veel, he has built a homestead on the frontier. His farm grows ever larger. Elves, demons, witches, and humans are all welcome. Then one day, Plattie’s older brother, Prince Arowana, pays a visit to the farm to say goodbye. He is departing on a journey for self-improvement!
What will his sweetheart Puffer do…?!
Series Overview: A corporate drone is summoned to another world and granted a powerful skill, “Supreme Wielder,” which is invisible to those who summoned him.
They’re dismayed to see he’s useless to them, so he asks only for a little plot of land to work for himself. His skill allows him to use any tool to its greatest abilities, including fishing poles, cooking utensils, and construction tools. When he fishes up a mermaid who wants him for her bridegroom, charms a young dragon with his cooking, and excites an undead king with his rare skill, how long can his quiet country life last?!