What did you do with the dice?

(Original fantasy group-playing world view) The whole story begins with a shrimp-headed strongman with an intelligence of 5 and his brother, a cold-blooded legal scholar, being thrown into another world in the Middle Ages to become lords, and then adding an omnipotent white-haired cat maid.
Bring war and abstraction to the world!
Rusalka (Intelligence 5): "I woke up to find the concentration of clichés about the natives of the Western fantasy world had increased ten thousandfold. Only I remained unchanged. I discovered that the natives still couldn't understand me. Is it true that the thoughts of the strong are destined to be lonely?"
Sanita (Intelligence 20): "God damn it! I'll break up with you when we get back to Earth. I'm afraid the psychiatrist will take me away with him."
Also known as "When the Humanoid Lord Shines", "Are the Brothers Who Study Law Really Human?", "Everyone Stop Arguing, You're All Meal Replacements", and "Five Wisdom Reincarnations: Rely on Real Brothers in Another World"
(Those who have never played DND/RPG can also eat it with confidence)